Ian Poulter has accused tournament officials of lying about the condition of the greens at Chambers Bay during this week's US Open.
The putting surfaces have been widely criticised, with Henrik Stenson comparing them to "putting on broccoli" and Billy Horschel describing the fourth green in particular as "God awful."
And Poulter added to the controversy after completing a final round of 77 on Sunday, posting a picture of the surface and saying United States Golf Association (USGA) executive director Mike Davis should apologise for the conditions and defending them in public.
"I look forward to congratulating the 2015 US Open champion very soon, I simply didn't play well enough to be remotely close," Poulter posted on Instagram. "This is not sour grapes or moaning or any of that crap. It is simply the truth.
"Mike Davis the head of the USGA unfortunately hasn't spoken the truth about the condition of the greens. I feel very sorry for the hundreds of greens staff who spent countless hours leading into this week and this week doing there (sic) best to have it the best they could and I thank them for that.
"But look at the picture. This was the surface we had to putt on. It is disgraceful that the USGA hasn't apologized about the greens they simply have said "we are thrilled (with) the course condition this week".
"It wasn't a bad golf course, in fact it played well and was playable. What wasn't playable were the green surfaces. If this was a regular PGA tour event lots of players would have withdrawn and gone home, but players won't do that for a major. They were simply the worst most disgraceful surface I have ever seen on any tour in all the years I have played.
"The US Open deserves better than that. And the extra money that they have early this year from Fox Sports, they could easily have relayed (sic) the greens so we could have had perfect surfaces. Simply not good enough and deeply disappointing for a tournament of this magnitude.
"I don't like it when people lie on camera to try and save face.
"And to all you fans that paid good money to try and watch us play golf but couldn't see anything on most holes because it wasn't possible to stand on huge slopes or see around stands, I apologize and I'm sorry you wasted your money travelling to be disappointed.
"I hope we all learn something moving forward to not have these problems in the future."