Ludvig Aberg (knee) WDs from Wells Fargo Championship

(Photo credit: Aaron Doster-USA TODAY Sports)
Swedish star Ludvig Aberg, the No. 6 player in the Official World Golf Ranking, has withdrawn from this week's Wells Fargo Championship citing a knee issue.

The $20 million signature event at Quail Hollow Club in Charlotte, N.C., is PGA Tour players' final tune-up before the PGA Championship the following week.

"I was very excited to tee it up at Quail Hollow for the first t