Walker fires 65 to lead Grillo by one at PGA

Jimmy Walker, who missed the cut in three of his four prior major starts, fired a five-under par 65 Thursday to grab a one-shot lead over Argentina's Emiliano Grillo in the first round of the PGA Championship. Walker, a 37-year-old American ranked 48th in the world, began off the 10th tee and birdied the 13th and 15th holes, sank a 15-foot birdie putt at the par-3 16th and added back-to-back birdies at the par-5 18th and par-4 first, the latter on a 20-foot putt. After taking his lone bogey of t