For years, the National Bowling Stadium in Reno, Nev., was known as a haven for left-handers. One of the most visible instances was the triumph at the 2002 Masters by relatively unheralded lefty Brett Wolfe, who used an old urethane Blue Hammer throughout that tournament. Although serious bowlers knew of the 33-year-old Tempe, Ariz., resident, who was a two-time collegiate All-American at Arizona State...