No. 8-ranked featherweight Arnold Allen (20-4) headlines UFC Vegas 117 against surging Melquizael Costa (26-7) on May 16 at the Apex, seeking to rebound from a January decision loss to Jean Silva after rebounding with a win over Giga Chikadze last summer. Costa rides a six-fight win streak capped by first-round knockouts of Dan Ige in February and Morgan Charrière in December, showcasing brutal head-kick finishes against lesser opposition. With no reported injuries or withdrawals, traders weigh Allen's elite grappling and durability against Costa's aggressive striking and shorter average fight time (9:11 vs. Allen's 13:43), in a five-round main event primed for stylistic clash at altitude-neutral Apex.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedThis market will resolve to "Arnold Allen" if Arnold Allen is officially declared the winner of the fight against Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, goes the full scheduled number of rounds and the result is determined by the judges' scorecards. Otherwise, it will resolve to "No."
Draws decided by the judges' scorecards after all scheduled rounds are completed will resolve "Yes." Technical decisions or technical draws declared before all rounds are completed will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, ends by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if Arnold Allen defeats Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if Melquizael Costa defeats Arnold Allen at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, ends by submission, including tapout, verbal submission, or technical submission (referee stoppage due to a submission hold). Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 0.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 1.
“Under 0.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 1.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 1 for a 0.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 1.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 2.
“Under 1.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 2.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 2 for a 1.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 2.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 3.
“Under 2.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 3.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 3 for a 2.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 3.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 4.
“Under 3.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 4.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 4 for a 3.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 4.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 5.
“Under 4.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 5.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 5 for a 4.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.No. 8-ranked featherweight Arnold Allen (20-4) headlines UFC Vegas 117 against surging Melquizael Costa (26-7) on May 16 at the Apex, seeking to rebound from a January decision loss to Jean Silva after rebounding with a win over Giga Chikadze last summer. Costa rides a six-fight win streak capped by first-round knockouts of Dan Ige in February and Morgan Charrière in December, showcasing brutal head-kick finishes against lesser opposition. With no reported injuries or withdrawals, traders weigh Allen's elite grappling and durability against Costa's aggressive striking and shorter average fight time (9:11 vs. Allen's 13:43), in a five-round main event primed for stylistic clash at altitude-neutral Apex.
This market will resolve to "Arnold Allen" if Arnold Allen is officially declared the winner of the fight against Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.
Market Opened: Apr 25, 2026, 6:00 PM ET
Volume
$3End Date
May 17, 2026Market Opened
Apr 25, 2026, 6:00 PM ETResolution Source
https://www.ufc.com/eventsResolver
0x65070BE91...This market will resolve to "Arnold Allen" if Arnold Allen is officially declared the winner of the fight against Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, goes the full scheduled number of rounds and the result is determined by the judges' scorecards. Otherwise, it will resolve to "No."
Draws decided by the judges' scorecards after all scheduled rounds are completed will resolve "Yes." Technical decisions or technical draws declared before all rounds are completed will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, ends by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if Arnold Allen defeats Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if Melquizael Costa defeats Arnold Allen at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, ends by submission, including tapout, verbal submission, or technical submission (referee stoppage due to a submission hold). Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 0.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 1.
“Under 0.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 1.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 1 for a 0.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 1.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 2.
“Under 1.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 2.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 2 for a 1.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 2.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 3.
“Under 2.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 3.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 3 for a 2.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 3.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 4.
“Under 3.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 4.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 4 for a 3.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 4.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 5.
“Under 4.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 5.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 5 for a 4.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.No. 8-ranked featherweight Arnold Allen (20-4) headlines UFC Vegas 117 against surging Melquizael Costa (26-7) on May 16 at the Apex, seeking to rebound from a January decision loss to Jean Silva after rebounding with a win over Giga Chikadze last summer. Costa rides a six-fight win streak capped by first-round knockouts of Dan Ige in February and Morgan Charrière in December, showcasing brutal head-kick finishes against lesser opposition. With no reported injuries or withdrawals, traders weigh Allen's elite grappling and durability against Costa's aggressive striking and shorter average fight time (9:11 vs. Allen's 13:43), in a five-round main event primed for stylistic clash at altitude-neutral Apex.
This market will resolve to "Arnold Allen" if Arnold Allen is officially declared the winner of the fight against Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.
Market Opened: Apr 25, 2026, 6:00 PM ET
Volume
$3End Date
May 17, 2026Market Opened
Apr 25, 2026, 6:00 PM ETResolution Source
https://www.ufc.com/eventsResolver
0x65070BE91...No. 8-ranked featherweight Arnold Allen (20-4) headlines UFC Vegas 117 against surging Melquizael Costa (26-7) on May 16 at the Apex, seeking to rebound from a January decision loss to Jean Silva after rebounding with a win over Giga Chikadze last summer. Costa rides a six-fight win streak capped by first-round knockouts of Dan Ige in February and Morgan Charrière in December, showcasing brutal head-kick finishes against lesser opposition. With no reported injuries or withdrawals, traders weigh Allen's elite grappling and durability against Costa's aggressive striking and shorter average fight time (9:11 vs. Allen's 13:43), in a five-round main event primed for stylistic clash at altitude-neutral Apex.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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