Kalshi has signed an exclusive deal with the U.S.
Tennis Association (USTA) to become the exclusive prediction market platform partner of the US Open tennis tournament, whose main draw began Sunday in Flushing Meadows, New York, according to a report from Front Office Sports (FOS).
Per the report, which cites two sources familiar with the deal, the agreement goes into effect immediately and was not formally finalized until after the tournament's qualifying rounds concluded last week.
The report did not disclose the financial terms of the deal.
The US Open, which is owned and operated by the USTA, was planning to consider prediction market partnerships for 2027 and beyond.
