Coming into Friday’s cashers round of the 2021 U.S. Open at the National Bowling Stadium in Reno, the top four were left-handed and the big question was how lane pattern 4 would play for left-right equity. Once the 8-game cashers round was completed, it was clear the right-handers had more than a fighting chance as Sam Cooley and Jason Sterner moved into second and fourth, respectively, while Jakob Butturff’s lead shrunk from 157 pins after 24 games to 96 pins after 32...