Tired Johnson pulls out of Houston Open

World number one Dustin Johnson has pulled out of the Shell Houston Open saying he needed some rest following victory at the WGC-Dell Match Play on Sunday.

Johnson, 32, won his third straight tournament at the weekend, winning two matches on Sunday that went the distance.

The first win was a 1-up victory over Hideto Tanihara in the semifinals and he followed that up with a 1-up victory over Jon Rahm in the championship match.

Announcing his decision, Johnson said that he had played seven rounds of golf in the last five days, and that he needed a break ahead of the Masters.

Johnson is currently a 5-to-1 favourite to triumph at Augusta National

He had hinted at withdrawal on Sunday night, saying that his participation was up in the air. "I don’t know," Johnson said. "Ask me that in the morning when I wake up."

The Houston Open will feature four players from the world’s top 10 including Henrik Stenson, Jordan Spieth, Rickie Fowler and Adam Scott.