Dustin Johnson withdraws from Byron Nelson with knee discomfort Field Level Media 11 May 2021, 06:40 GMT+10 World No. 1 Dustin Johnson withdrew from the ATT Byron Nelson event this week due to a knee issue. The surprise move came one week out from the PGA Championship, the second major of 2021. "It is with deepest regret that I must withdraw from this week's ATT Byron Nelson," Johnson said in a statement. "Unfortunately, the knee discomfort I occasionally experience has returned and after consultation with my team and trainers, I feel it is best that I remain at home and focus on my rehabilit...