DAYTONA BEACH, Fla.—Michael McDowell was glued to Brad Keselowski’s bumper, watching and waiting for his chance to win the Daytona 500. Joey Logano was the leader, the laps were winding down and yet no one had the nerve to pull out of traffic. McDowell was certain Keselowski would go for it eventually, and when he did, McDowell would play his hand. On the final lap, Keselowski attempted to dart around Logano, but Logano threw a block on his teammate that crashed them both. McDowell stayed right where he was, flat in the gas, and drove through a crash scene for a stunning upset. “I knew he would go for a race-winning move and my plan was to let him make that move,” McDowell said. ”I knew I didn’t want to make my move too early, so I was committed to the (Keselowski) bumper and when he made the move, the …