A sports bettor who heckled Olympic gold medalist Gabby Thomas during a Grand Slam Track event in Philadelphia has been banned by FanDuel Sportsbook, the betting company confirmed this week.

In a statement released Wednesday, FanDuel said it “condemns in the strongest terms abusive behavior directed towards athletes. Threatening or harassing athletes is unacceptable and has no place in sports. This customer is no longer able to wager with FanDuel.”

The incident occurred after Thomas finished fourth in a 100-meter sprint, which was won by Melissa Jefferson-Wooden. The bettor boasted on social media that he had intentionally heckled Thomas to affect her performance and claimed it secured his parlay bet, which included Jefferson-Wooden winning the race. He even posted a screenshot of his winning ticket online.

Thomas, a 200-meter Olympic champion at the Paris Games last summer, described the encounter in a post on X. “This grown man followed me around the track as I took pictures and signed autographs for fans (mostly children) shouting personal insults — anybody who enables him online is gross,” she wrote.

Grand Slam Track, the professional league co-founded by Hall of Fame sprinter Michael Johnson, responded with a statement saying it was conducting a full investigation. “We are working to identify the individual involved and will take appropriate action as necessary. We will implement additional safeguards to help prevent incidents like this in the future. Let us be clear, despicable behavior like this will not be tolerated.”

The Grand Slam Track season concludes with its final meet in Los Angeles on June 28-29.

This incident adds to a troubling pattern of harassment targeting female athletes. In Sweden, world champion cross-country skier Frida Karlsson publicly shared her ordeal with a stalker who followed her for over a year. According to the Swedish news agency TT, a man in his 60s was convicted of stalking Karlsson, having called her over 200 times and approached her outside her residence. He was given a suspended sentence and ordered to pay 40,000 kronor (about $4,100) in damages.

Earlier this year, authorities in the United Arab Emirates detained a man who had caused British tennis star Emma Raducanu distress through what officials described as “fixated behavior.” During the Dubai Championships, the man left her a note, took her picture, and engaged in persistent actions that unsettled her, according to a statement from the Dubai government’s media office.