Who Is Jordan Spieth’s Caddie, Michael Greller? All You Need To Know About Teacher Turned Looper

When Jordan Spieth lines up a shot, there’s one steady voice always nearby: Michael Greller. But before he was carrying Spieth’s bag on golf’s biggest stages, Greller was grading sixth-grade math homework in Washington state. A former middle school teacher with a passion for golf, Greller caddied part-time at Chambers Bay and Gold Mountain during his summers off, slowly building a side hustle into something much bigger.

The pivotal moment came in 2011, when he first looped for a teenage Spieth at the U.S. Junior Amateur. The chemistry was instant. When Spieth turned pro in 2012, Greller got the call and traded the classroom for the fairways full-time. Since then, he’s been a fixture at Spieth’s side during career-defining victories, including the 2015 Masters and 2017 Open Championship.

This was one of the coolest golf things I’ve ever done: Last week I walked the last three holes at Chambers Bay with Michael Greller — and relived one of the craziest finishes in U.S. Open history, 10 years later.

I hope you watch this one!

(link below)pic.twitter.com/sNjsmlTMjd

— Dylan Dethier (@dylan_dethier) June 11, 2025

Greller’s background as a teacher shows in his calm, analytical style. He reads greens, calculates yardages, and knows when to crack a joke or offer a pep talk. Their friendship goes beyond the course, with Spieth often teasing Greller’s “dad bod” or bald spot. But when the pressure’s on, few duos are tighter. In a sport built on precision and trust, Greller remains Spieth’s ultimate safety net.

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