Caddie Zach Guthrie (Tyler Duncan) walks you through some of the preparation/homework that caddies put in before a tournament starts. This includes searching for sprinkler heads on the course and — if they’re not marked — marking them for your fellow caddies.
Watch: Zach Guthrie on pre-tournament caddie prep
Jan 16, 2020; La Quinta, California, USA; Tyler Duncan (right) grabs a club as caddie Zach Guthrie looks over notes before playing the 17th hole during the first round of The American Express golf tournament on the Jack Nicklaus Course at PGA West. Mandatory Credit: Orlando Ramirez-USA TODAY Sports