ERIN, Wis. (AP) Bobby Leopold has beaten No. 1 seed Gregor Main at the weather-delayed first round of the U.S. Amateur on Thursday.
The No. 64-seeded Leopold beat Main 2 and 1. Main was the tournament's top seed after recording the lowest score in stroke play earlier this week. Leopold made the field as an alternate and didn't find out until early last week that he'd be playing.
Beau Hossler, a 16-year-old high school student from California, beat David Denlinger 2 and 1.
Second-round play began Thursday morning at Erin Hills. Defending champion Peter Uihlein advanced Wednesday.