This has to be one of the worst shots of Lefty's career.
Phil Mickelson was quickly moving his way up the leaderboard during the final round of the 2015 Open Championship at St. Andrews on Monday when he hit what had to be one of the worst tee shots of his career. On the incredibly tricky No. 17, Mickelson hooked his tee shot more than he wanted and the ball ended up on the balcony of a hotel room.
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Make sure to check it out in the video above.