Xander Schauffele WDs from Sentry Tournament of Champions

Xander Schauffele withdrew from the Sentry Tournament of Champions due to his ailing back.

He was 1-over through eight holes on Friday when he decided to listen to the advice of his caddie, Austin Kaiser.

"On 9, he's like, 'You know, we have a lot of tournaments coming up on the West Coast swing, and it's a big swing for us,'" Schauffele said. "And he's like, 'Are you going to look back and feel like really proud of you