Phil Mickelson apologised on Wednesday for putting a moving ball during the third round of last week's US Open,saying he is"embarrassed".
Disappointed Australian says the USGA"need to get people who know what they're doing and set up the golf course right".
Don't like what you saw from Phil Mickelson at the US Open? You ain't seen nothin'yet.
Brooks Koepka has become a multiple major winner with a gutsy victory at the US Open at Shinnecock Hills in New York.
Phil Mickelson hit a moving ball on the 13th green at the US Open in what the American said was a deliberate action to"take advantage of the rules".
USGA official appears on host broadcaster Fox Sports and admits they blew it with the extreme course set-up.
Marc Leishman has suffered a dramatic stumble to fall back from the lead after a chaotic third round at the US Open.
Taking his 69 on Thursday and applying two more coats of high gloss finish to it on Friday,Dustin Johnson built his US Open lead to four strokes.
Blowouts from Jason Day and Adam Scott have left Leishman as Australia's best hope to reel in runaway leader Dustin Johnson.
Jason Day has posted his equal worst round at the US Open to join a list of victims taken by a brutally difficult Shinnecock Hills on day one in New York.
Jason Day says his US Open instincts kicked in the minute he arrived at Shinnecock Hills for a measured preparation he hopes will finally deliver victory.