NEWTOWN SQUARE, Pa. — Rory McIlroy knows exactly why he was never able to make a real run at winning the PGA Championship on Sunday at Aronimink. Three holes cost him the chance to win his seventh major championship, third in the past two years and second in a row. McIlroy failed to birdie either of the two par-5 holes — Nos. 9 and 16, both of which were birdie festivals for many players in the tournament. He took disappointing pars on both. And he bogeyed the 299-yard driveable par-4 No. 13