Mickelson, who withdrew from the Memorial last week after playing 11 holes, sought a second opinion on his wrist injury and was relieved to hear there was only inflammation.
The three-time major champion believes he injured the wrist chipping out of the rough at Oakmont during practice rounds a week ago. Even after withdrawing from the Memorial, he entered the Stanford St. Jude Championship in Memphis because he prefers competition heading into the majors.
'The timing isn't the best because I really wanted to play at Memphis,' he said in a statement. 'But the good news is there is no break or fracture. I have inflammation that can be relieved, and I'm looking forward to playing the Open at 100 percent physically.'