5. Tiger Woods, 2013 Masters
On the 15th hole during the second round, Woods was tied for the lead when he pitched his third shot and it ricocheted off the flag and into the water. After dropping, he played his fifth shot from the wrong spot – a couple of yards behind the original spot instead of close to it.
A former rules official watching on TV called in the potential violation of Rule 26-1. Masters officials initially decreed that he hadn’t broken the rule, and Woods signed his scorecard for 71. But on closer examination, Woods was penalized two strokes, making the scorecard he’d signed after his round incorrect. After meeting with Woods early Saturday morning, the Masters applied Rule 33-7 (Disqualification Penalty; Committee Discretion) that allows a committee to waive disqualification for an incorrect scorecard, permitting Woods to play on despite many believing he should have been disqualified or withdrawn on his own.