DETROIT (AP) — Cam Davis won the Rocket Mortgage Classic on Sunday for his first PGA Tour title when Troy Merritt missed a 6-foot par putt on the fifth hole of a playoff. Davis missed putts to win on each of the playoff holes. The 26-year-old Australian left 6- and 18-foot putts high, a 25-foot putt low and a 19-footer high. He misread a break on a 12-foot putt on the fifth playoff hole, then won when Merritt made bogey. Davis closed with a 5-under 67 to match Merritt and Joaquin Niemann at 18-under 270 at Detroit Golf Club. Niemann dropped out of the playoff with a bogey on the first extra hole, his first bogey of the week.