Mickelson has indicated that this week could be his final U.S. Open. His star has dimmed substantially in the past few years, but he remains one of the most compelling, significant and polarizing figures in golf history.

The six-time major winner has six runner-up finishes at the U.S. Open but has never lifted the hardware. Could this be his final shot?

Phil Mickleson, a six-time major winner, was recently asked about the likelihood that this year's U.S. Open -- which will again be played at Oakmont -- will be his last. "I haven't thought about it too much,