Spieth leads by one

Jordan Spieth , a 21-year-old Texas native, shot a five-under-par 67 to take a one-stroke lead over three players through 54 holes of the Houston Open. A victory Sunday would be Spieth’s third on the PGA Tour and make him the second youngest since 1940 to reach three titles on the Tour;

Tiger Woods is the youngest. Spieth sank a 41-foot birdie putt from just off the green on the parthree 16th hole to get to 14 under. Austin Cook , who gained entry through the Monday qualifier, is tied for second at 13-under 203 with first-round leader Scott Piercy and Johnson Wagner .

Andrew Putnam , the 36-hole leader, shot a 75 and fell five shots off the pace. Phil Mickelson also shot a 75 and fell six back. Mickelson birdied his first hole but had a double bogey on the par-four fifth hole and bogeys on the last three holes.