US Open Betting Boom: Cobolli-Comesana Match Draws Wagers of up to $21.7 Million

The betting numbers surrounding Flavio Cobolli’s first-round match against Argentina’s Camilo Ugo Carabelli at the US Open were striking. The five-set contest lasted four hours and 13 minutes, while wagers climbed from $8 million at the end of the third set to $14.9 million in the fourth.

The total reached $17.1 million at the start of the fifth set before peaking at $21.7 million, according to tennis website Bounces. That amount for a single first-round match was nearly four times the $5.5 million prize awarded to the men’s tournament champion, the largest payout in US Open history.

The figures have revived debate over tennis’s relationship with betting operators. The issue gained fresh attention after Matteo Berrettini said his brother had received death threats at the French Open in an effort to force him to lose.

The debate also follows the US Open’s announcement of a sponsorship agreement with Kalshi, one of the platforms known in the United States as prediction markets. The deal is the tournament’s first sponsorship arrangement with such a platform, as the sector continues to grow rapidly.