Going toe to toe with some of bowling’s all-time greats, senior rookie Brian Dennis grabbed the lead after Wednesday’s second round of the 2024 USBC Senior Masters at Sam’s Town in Las Vegas. Dennis, a 50-year-old right-hander, rolled games of 238, 228, 259, 234 and 267 for 1,226 in Tuesday’s first round, then 237, 242, 240, 231 and 267 for 1,217 in the second round for a 10-game total of 2,443, a 244.3 average and a 5-pin lead over Hall of Famer Jason Couch at 2,438,...