Tennis investigators are examining whether a match at this year's Wimbledon was fixed after suspicious betting patterns were reported.
The Tennis Integrity Unit has confirmed it's looking into a match, but has not revealed which one.
The TIU is already investigating a US Open first-round match between Vitalia Diatchenko and Timea Bacsinszky.
Alerts come from regulators and betting organisations, who can report matches if they notice suspicious betting patterns.
The TIU says it received 96 alerts from July to September, with one of those coming from Wimbledon and another at the US Open.
No details of the Wimbledon match under scrutiny have been given.