Rory McIlroy shows an angry side and heaves his club into the water at Doral

Rory McIlroy reacts after chipping onto the 18th green during the second round of the Cadillac Championship golf tournament in Doral, Fla., Friday, March 6, 2015. (AP Photo/J Pat Carter) (The Associated Press)

Rory McIlroy might be No. 1 in the world at throwing clubs, too.

McIlroy's frustrations boiled over Friday in the Cadillac Championship when he hit his second shot into the water on the par-5 eight hole, and then heaved his club into the lake. The club rotated like Donald Trump's helicopter and flew some 50 yards into the water.

McIlroy was 1 under for his round when he put the ball and club in the water. He wound up making bogey.

The world's No. 1 player is coming off a missed cut at the Honda Classic. He said Thursday after opening with a 73 that he was frustrated about tentative swings instead of playing fearlessly.

In the first round, McIlroy hit 4-iron on the eighth hole on the green for an eagle.