Padraig Harrington made four birdies, though it was the bogey he saved after losing a tee shot deep in a thicket of trees on the 15th hole that helped him keep a share of the first-round lead with Mark Hensby at the U.S. Senior Open.

Angel Cabrera is back at Augusta National, walking the fairways at the Masters six years after his last appearance and less than two after he was paroled from an Argentine prison.