Breaking down everyone with a shot to win the PGA Championship

KIAWAH ISLAND, S.C. -- For a few hours Saturday afternoon, it appeared this PGA Championship might be an unlikely coronation. Phil Mickelson was on cruise control, hitting fairways, rolling in birdie putts, thumbs-upping everyone in sight. He walked to the 11th tee with a five-shot lead. Could this really be happening? Could Phil Mickelson run away from the field and become the oldest major champion of all time?

No, it wasn't going to be that easy. The 50-year-old Mickelson, who hadn't won a regular Tour event in two years or a major championship in eight, started to wobble. The putts stopped going in. One tee shot went in the water, another underneath the tire of a golf cart. The lead…