PORTRUSH, Northern Ireland :Defending British Open champion Xander Schauffele dragged himself back into contention on Saturday with a superb third-round 66 he put down to "luck boxing". The 31-year-old American, who won last year's PGA Championship to claim his first major title before lifting the Claret Jug at Troon, has struggled for form this season. Opening rounds of 71 and 69 at Royal Portrush left him well off the pace but he finished on seven under to stay on the coat-tails of the