A featherweight bout at UFC Vegas 110 on November 1 has triggered issues about betting integrity and prompted main sportsbooks to challenge refunds following claims of suspected battle manipulation. Isaac Dulgarian vs. Yadier del Valle noticed suspicious motion earlier than the match, and most sportsbooks refunded this guess.
Based on MMA journalist Harry Mac on X, federal authorities flagged irregular betting exercise earlier than the occasion and allegedly notified the UFC hours earlier than the battle. Mac claimed that the FBI recognized suspicious line motion and alleged the UFC proceeded regardless of being given the chance to cancel.
“VERY important tidbit here: the FBI notified the UFC of the abnormal action and line movement and gave them hours to pull the fight. They chose to continue and from my perspective are now complicit in fixing a fight … Update: federal regulators have flagged OVER 100 UFC fights this year for abnormal betting patterns, including 2 additional fighters on last nights card. Shit is about to get VERY ugly. Still working to confirm but it sounds like the Feds are moving to audit Herzogs fights.”
In subsequent posts, Mac claimed federal regulators flagged over 100 UFC fights this year for abnormal betting patterns. He also alleged authorities are moving to audit UFC referee Jason Herzog’s fights, although these claims stay unconfirmed.
UFC Betting Anomalies and Sportsbook Response
Isaac Dulgarian entered as a considerable favourite at -250 odds towards undefeated Cuban fighter Yadier del Valle. Nevertheless, the betting market shifted dramatically within the hours previous the competition. Dulgarian’s odds deteriorated from -250 to roughly -166, representing extraordinary line volatility. A number of sportsbooks, together with DraftKings, eliminated proposition bets to reduce publicity.
Del Valle secured a first-round rear-naked choke submission at 3:41. Caesars Sportsbook, William Hill US, and DraftKings all issued money refunds to affected clients.
Analytical Scrutiny
UFC analyst Michael Chiesa delivered a dangerous evaluation of Dulgarian’s efficiency. Chiesa famous elementary grappling deficiencies inconsistent with a UFC principal card fighter. Particularly, Dulgarian failed to aim fundamental defensive jiu-jitsu when caught within the rear-naked choke, as a substitute throwing ineffective backward punches. Chiesa said the efficiency was “full rubbish” and that Dulgarian “fought like a novice” and “didn’t even transfer his toes,” contrasting this with Dulgarian’s demonstrated skills in earlier matchups.
Historical Context
Scrutiny surrounding Dulgarian gained weight from his connection to disgraced MMA coach James Krause. Dulgarian trained under Krause at Glory MMA & Health earlier than relocating to Manufacturing facility X in Colorado following Krause’s suspension. Krause’s involvement in a 2022 UFC betting scandal involving fighter Darrick Minner prompted his lifetime ban. In March 2025, fighters Darrick Minner and Jeff Molina obtained multi-year suspensions for his or her roles in betting schemes, with Molina receiving a 36-month ban for putting important bets on a battle utilizing insider information of his teammate’s undisclosed harm.
The UFC implemented strengthened anti-gambling protocols in January 2023, restricting fighters, coaches, managers, and affiliated personnel from betting on UFC fights under any circumstances.
NBA Parallel Investigation
The UFC betting concerns arrive amid a significant federal investigation into illegal gambling in the NBA. On October 23, 2025, the FBI announced arrests of 34 people, together with Portland Path Blazers head coach Chauncey Billups and Miami Warmth guard Terry Rozier, following an investigation into organized crime-linked playing schemes.
Federal prosecutors alleged Rozier provided confidential information about injuries and game plans to associates who placed substantial wagers on NBA games. Billups faced charges related to illegal poker operations backed by organized crime families, involving advanced technology and rigged equipment.
Both face charges of wire fraud conspiracy and money laundering conspiracy, each carrying potential sentences of up to 20 years in prison. FBI Director Kash Patel described the scheme as “mind-boggling” and “the insider-trading saga for the NBA.”
Outstanding Questions
Harry Mac’s allegations remain unconfirmed by official sources. No formal announcement from the FBI, UFC, or regulatory authorities has substantiated claims that federal regulators flagged over 100 UFC fights or that authorities are auditing referee Jon Herzog’s decisions. The UFC has not issued public statements regarding federal involvement in the UFC Vegas 110 fight or broader investigations into betting patterns.
