[U.S. Open Tennis Championship Partners Exclusively with Kalshi as Official Prediction Market Platform] According to Front Office Sports, Kalshi has signed an exclusive agreement with the United States Tennis Association (USTA) to become the official prediction market platform partner of the U.S. Open Tennis Championship. Although the specific terms and details of the deal remain unclear, sources indicate that the agreement was finalized only after the qualifying rounds concluded last week. As part of the agreement, the USTA prohibits any other prediction market platforms from advertising within the event venues or on television (including ESPN, the channel responsible for broadcasting the tournament). The U.S. Open Tennis Championship, owned and operated by the USTA, had originally planned to consider partnerships with prediction markets starting in 2027 and beyond.