Matthew Wolff had a roller-coaster round that went well enough on Saturday to give him a three-shot lead in the Rocket Mortgage Classic. Wolff shot his second straight 8-under 64 to move into position for his second PGA Tour victory. He was at 19-under 197 at Detroit Golf Club. Armour and Bryson DeChambeau were tied for second after 67s. Wolff made a 14-foot eagle putt at the 559-yard, par-5 14th to pull into a tie with Armour at 17 under, and added birdies on the par-3 15th and par-5 17th. He finished with the eagle, nine birdies, five pars and three bogeys. If the 21-year-old Wolff can on Sunday, it will be his first victory since the 3M Open last year in Minnesota, when he made a 26-foot putt from the fringe for eagle on the final hole for a one-stroke win in his third tournament as a professional. Wolff joined Tiger Woods and Ben Crenshaw as winners of a PGA Tour event and the individual NCAA title in the same year.