World No. 6 Collin Morikawa has withdrawn from this week's Truist Championship, the PGA Tour confirmed Monday. Andrew Putnam will take his place at Quail Hollow Club in Charlotte, North Carolina.
No reason was given for Morikawa's withdrawal. The 29-year-old has been managing a back issue since withdrawing from The Players Championship in March. Since then, he posted a T7 finish at The Masters and a T4 at the RBC Heritage before tying for 62nd at last week's Cadillac Championship, 20 strokes behind winner Cameron Young.
Morikawa is a seven-time PGA Tour winner, with major titles at the 2020 PGA Championship and the 2021 Open Championship, and won the AT&T Pebble Beach Pro-Am earlier this year.
Andrew Putnam, 37, finished T18 last week at Trump National Doral, marking his third top-20 finish this season.