Any flat lane pattern is going to yield low scores, but they weren’t quite as low as might have been expected on the flat pattern for Wednesday’s second round of the 2021 U.S. Open at the National Bowling Stadium in Reno. Jakob Butturff extended the 63-pin lead he held after Tuesday’s first round to 77 pins after the second round as he added an 8-game block of 1,661 Wednesday to his 1,914 on Tuesday. The closest pursuer to the 26-year-old left-hander with the quirky...