Jimmy Walker holds 1-shot lead over Jason Day after 54 holes

SPRINGFIELD, N.J. — Jimmy Walker overcame a few wild tee shots with four birdies on the back nine for a 2-under 68 and a one-shot lead over defending champion Jason Day going into the final round of the rain-plagued PGA Championship.

The competition was already shaping up to be a major like no other.

Even as Walker and Day were finishing their rounds, the fourth round already had begun on rain-soaked Baltusrol Golf Club. The PGA of America chose not to redo pairings for the final round because it was the only chance to finish by Sunday.

Then the PGA decided to play preferred lies for the final round, which had not happened in a major in more than a half-century. That means players will be able to lift, clean and place their balls in “closely mown areas.”