Brooks Koepka downplayed his relationship with Dustin Johnson after his controversial comments at the US PGA Championship.

After the third round at TPC Harding Park on Saturday, Koepka reminded Johnson he had "only won one" major as both looked to claim the title in San Francisco.

Koepka fell short in his three-peat bid and Johnson ended up runner-up as Collin Morikawa won his maiden major.

Four-time major champion Koepka was criticised for those comments and the American downplayed his relationship with Johnson on Thursday.

"We worked out, I worked with Joey [Diovisalvi, trainer] for two years," he said after the first round of the Wyndham Championship.

"You guys make your own stories so I have no idea what you all do, but I think even the Jordan [Spieth] and Justin [Thomas] thing gets blown out too much.

"I think you guys overplay a lot of things."

In his comments at the US PGA, Koepka also said: "I don't know a lot of the other guys up there".

The 30-year-old, who opened with a two-over 72 at the Wyndham Championship, apologised, but felt too much was made about what he said.

"I apologise for the other guys comment just cos' I really didn't look at the leaderboard," Koepka said.

"I saw Dustin was at nine [under], I was at five at that point and then made two coming in so I really didn't even know where I kind of stood, didn't really look coming off 18 and then went right into the interview.

"I had no idea who was eight, who was seven, but I never really look at guys that are tied with me, I always kind of look ahead so I had no idea but I get it, I get how it came across and I apologise for that."