AUGUSTA, Ga. (AP) — Michael Greller thought his Masters' experience peaked in 2012 when he won Augusta National's ticket lottery and he leaned over the ropes to get his picture snapped with Phil Mickelson and his caddie. It's time the former sixth-grade math teacher resets his expectations. Greller now is the caddie for record-setting Masters champion Jordan Spieth, the first wire-to-wire winner since Raymond Floyd in 1976. "I thought three years ago was the pinnacle just being out there walking around ...," Greller said Sunday.