The Proprietors Cup IV is set for June 12-14 at Beaver Vu Bowl in Beavercreek, Ohio, and the new Detroit Cup will debut July 10-12 at Thunderbowl Lanes in Detroit, Michigan, tournament operator Billy Eysoldt said. The Proprietors Cup will pay at least $20,000 for first as the tournament already is full at 248 entries with a waiting list. AJ Rice took home $20,000 as the winner last year. The tournament’s Facebook page is here and the website is here. The Proprietors Cup IV format...