Tom Greller, the older brother of Jordan Spieth's caddie, Michael Greller, will play in the U.S. Senior Open this week.

As a PGA Tour caddie, Michael Greller has reached peaks that few others have. The looper has helped Jordan Spieth win three ...

Michael Greller says he’s never rewatched that final round. Inevitably, he’s stumbled on snippets here and there. After all, the 2015 U.S. Open at Chambers Bay was ground-breaking ...

Caddie Michael Greller has had some memorable moments at USGA championships, including being on the bag of Jordan Spieth when he won the U.S. Open a decade ago at Chambers Bay, not far from his ...

Caddie Michael Greller has had some memorable moments at USGA championships, including being on the bag of Jordan Spieth when he won the U.S. Open a decade ago at Chambers Bay, not far from his ...

Caddie Michael Greller has had some memorable moments at USGA championships, including being on the bag of Jordan Spieth when he won the U.S. Open a decade ago at Chambers Bay, not far from his ...

Caddie Michael Greller has had some memorable moments at USGA championships, including being on the bag of Jordan Spieth when he won the U.S. Open a decade ago at Chambers Bay, not far from his ...

Caddie Michael Greller has had some memorable moments at USGA championships, including being on the bag of Jordan Spieth when he won the U.S. Open a decade ago at Chambers Bay, not far from his ...

Caddie Michael Greller has had some memorable moments at USGA championships, including being on the bag of Jordan Spieth when he won the U.S. Open a decade ago at Chambers Bay, not far from his ...