Any knowledgeable observer would have to rate Brian Kretzer and Lennie Boresch Jr. among the favorites at this week’s South Point Senior Shootout, which doesn’t allow any player with three or more PBA Tour and/or PBA Senior Tour titles to compete. Kretzer has one PBA Tour title and was a consistent force in his first year on the PBA50 Tour in 2016, though he didn’t win any PBA50 Tour titles, while Boresch has two PBA50 Tour titles and finished second in consecutive weeks in...