The PGA Tour star called himself a homophobic insult on Saturday during the third round of the Sentry Tournament of Champions in Kapalua, Hawaii.
Thomas gave the insult on the fourth hole after missing a 4-foot bet for par, and he was caught on a Golf Channel microphone.
Thomas, 27, who won the PGA Championship and 13 PGA Tour events, apologized when he discovered his insult had been captured on television after his tour.
“There is no excuse. I’m an adult, I’m a grown man, ”Thomas told the Golf Channel after his round. “There is absolutely no reason for me to say something like that. This is terrible. I am extremely embarrassed. It’s not who I am. This is not the kind of person that I am. But it is… unfortunately I did and I have to admit it and I am very sorry.
Thomas swore he would learn of this incident.
Warning: the video contains graphic language“Like I said, it’s excusable. I am speechless. … It’s bad, ”said Thomas. “There’s no other way to tell. I need to do better. I need to be better. It is definitely a learning experience. I deeply apologize to everyone I have offended and I will be better for it.
Thomas is 17 under and tied for fifth, four strokes behind third-round co-leaders Ryan Palmer and Harris English.