Lennie Boresch Jr. got back on top Tuesday by averaging 250.5 to take the first round lead in the PBA Senior Dayton Classic presented by Roto Grip. Boresch won his Senior Tour debut last month, then flew directly to Texas to be inducted into the United States Bowling Congress Hall of Fame before skipping the second Senior Tour tournament of the season. He returned with a 46th place finish in the third stop before heading to Dayton, where he rolled games of 226, 235, 289, 257, 254, 230, 245...