Phil Mickelson's frustrations are getting the best of him at the U.S. Open to the point he hit a moving ball with his putter in the third round on Saturday in Southampton, N.Y.

The 10 Mickelson carded on the hole as a result of the two-stroke penalty was the worst he's ever scored on a single hole at the U.S. Open.

Asked if people would find his actions on No. 13 disrespectful, Mickelson said: "It's meant to take advantage of the rules as best as you can". I took the 2-shot penalty and moved on. At that time, I just didn't feel like going back and forth and hitting the same shot over. He missed that putt as well and then tapped in for a 10 with the penalty he had to take, putting him at 10-over for the day and in a position where he's going to have some explaining to do.

"Phil really did want to understand how the rule operates because he didn't want to play in this championship if he should have been disqualified", Davis told a press conference at Shinnecock Hills.

"I've wanted to do it many times before and finally did". "I think he just snapped at how bad his speed was on that putt".

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Mickelson only apologized if anyone was offended by an intentional effort to take the lazy, childish way out after hitting poor golf shots. I don't know what happens now.' And then he started speaking to the rules official.

After hearing Mickelson's explanation, the USGA chose not to invoke Rule 1-2 despite language that would appear to match Mickelson's intent.

Phil Mickelson turned 48 on Saturday, an occasion marked by fans singing "Happy Birthday" at every turn. "I'm sure he is going to regret that". "The last time I saw something like that was John Daly at the '99 [U.S.] Open at Pinehurst".

After a frustrating few rounds at Shinnecock Hills, Mickelson has made the cut for the weekend but just barely as he's languishing at the bottom of the leaderboard on +15. "I've never seen that in tournament, only when playing with my mates".

"If someone is offended I apologise, but toughen up". [The U.S. Open] beats you up man. "Sometimes in these situations it is just easier to take the two shots and move on".