The US Open marked Phil Mickelson's first PGA tournament since January — and just his second overall event, including the inaugural LIV Golf Invitational, which was played last week in London. Mickelson's return to The Country Club was an ugly one, as he four-putted from 12 feet away on one hole, an embarrassing moment that capped off an 8-over finish on Thursday. Friday wasn't much better, as Mickelson finished with a score of 73, ending up 11 strokes over par. He missed the cut.

As he was preparing to leave The Country Club, Mickelson made a shocking admission, per Steve DiMeglio of Golf Week:

“I thought I was more prepared than I was,” Mickelson said as he got ready to get into his courtesy car and head westward to his home in California. “The U.S. Open is the ultimate test. And you don’t really know where your game is until you get tested, and I thought I was little bit closer than I was.”

Mickelson clearly thought he was more prepared than he really was for this test. The PGA and LIV Golf star went on to note his struggles with putting at the US Open, saying that he feels like he's playing better than what the numbers say on the scorecard.

It has certainly been a rough couple of tourneys for Mickelson, who finished 34th at the LIV Golf Invitational, though he did bring in a cool $150,000 for that finish.

The 52-year-old plans to play in the next LIV Golf event on June 30 at Pumpkin Ridge Golf Club in Portland. Mickelson will hope for a better showing there than his last two tournaments.