Phil Mickelson has no doubt he will be fit enough to tee off at next week&aposs US Open despite withdrawing from Thursday&aposs St Jude Championship in Memphis with a wrist injury. Mickelson was forced to abandon his first round at the Memorial last week after 11 holes due to soreness in his left wrist. The 37-year-old had the injury examined on Friday in San Diego and after three days of therapy was keen to play in the PGA Tour event starting on Thursday at TPC Southwind. But after getting a second opinion in San Diego on Monday, the world number two decided against travelling to Memphis and will instead have a cortisone injection to relieve the pain in order to compete in the season&aposs second major championship at Oakmont on June 14. “The timing isn&apost the best because I really wanted to play at Memphis,” said Mickelson, who has three major championships to his name. “But the good news is there is no break or fracture. I have inflammation that can be relieved and I&aposm looking forward to playing the US Open at 100 per cent.”