Quinn Sheehy won the singles title at the 2018 at U.S. High School Bowling National Championship to wrap up another sweep for the powerhouse Sun Prairie boys team at the tournament. On Saturday, the boys won their second straight team title in the competition, which is being held this year at St. Clair Bowl in Fairview Heights, Illinois, across the Mississippi River from St. Louis. And Sheehy won the singles on Sunday and Monday, following up on teammate Andrew Olson’s win last...