The lane patterns used in the 2016 U.S. Open and Saturday's second round of the 2019 U.S. Open are nearly identical on the right side. Both featured ratios of 1.73-1 middle-outside track, 1.16-1 middle-middle track and 1.06-1 middle-inside track. The 2016 pattern was 42 feet with 31.964 mL of oil, while 2019 was 41 feet with 29.934 mL. That should help explain Francois Lavoie’s giant block of 1,968 (225-265-290-258-251-227-207-245) on Saturday at Victory Lanes in Mooresville, N.C.,...