For the second straight week, Woods is looking over his shoulder at two players who can end his record 270-week reign atop the world ranking — Mickelson and Steve Stricker.
Mickelson would reach No. 1 for the first time with five scenarios: a victory in the PGA Championship; runner-up finish with Woods out of the top three; third-place finish with Woods out of the top 11; fourth-place finish with Woods outside the top 46; a two-way tie for fourth with Woods missing the cut.
Stricker has a tougher time. He could go to No. 1 only by winning the PGA Championship, provided Woods finishes out of the top 24 and Mickelson is out of the top three.