Rory McIlroy flings club into water during Round 2 of BMW

CASTLE ROCK, Colo. -- Rory McIlroy 's tee shot on the par-5 17th hole at Castle Pines went in the rough. His 3-wood went in the water.

That summed up the day, and the PGA Tour postseason, for McIlroy. He managed a par on the hole and a 1-under 71 on Friday in the BMW Championship that left him 10 shots out of the lead.

As club throws go, this one was pretty tame.

McIlroy, coming off a three-putt bogey on the 16th hole, hit his drive to the right rough and then casually flung the 3-wood toward the left. It bounced once and went in the water. He walked over to the edge of the water, reached down and retrieved it.

It was far worse at Doral in 2015 at a World Golf Championship. McIlroy hit 3-iron into the water, then heaved the club into the middle of the lake. He used 13 clubs the rest of the way. Donald Trump, who owns Doral, hired scuba divers to retrieve the club.