McDowell pulls out of event

Graeme McDowell has been forced to pull out (GETTY IMAGES)

Graeme McDowell has pulled out of this week's PGA Tour Wells Fargo event at Quail Hollow. The 2010 US Open champion said he had felt "under the weather" at last week's Zurich Classic.

"Very much wanted to play but didn't want to go there undercooked. Practice and rest for me this week," McDowell said.

Rory McIlroy will be in action at the event where he claimed his first PGA Tour win in 2010. He defends his US Open title next month at the tough Olympic Club course in San Francisco.