THURSDAY, AUG. 13 PROFESSIONAL BASEBALL Pittsburgh at Miami, 1:10 p.m. FOOTBALL PRESEASON Green Bay at Pittsburgh, 7 p.m. DISTRICT HIGH SCHOOL BOYS GOLF Charleroi at Beth-Center, at Chippewa Golf Course, 3 p.m. Frazier at Bentworth, at Chippewa Golf Course, 3 p.m. Mount ...