Ian Woosnam's Two-Stroke Penalty at The Open 2001

In the 2001 Open Championship at Royal Lytham & St Annes, Ian Woosnam started the final round trailing by one stroke but quickly took the lead with a birdie on the first hole.

However, his momentum was halted when his caddie revealed that Woosnam had two drivers in his bag, exceeding the legal limit of 14 clubs. This violation resulted in a two-stroke penalty, turning his birdie into a bogey.

Woosnam finished the round with a score of level-par 71, ultimately ending four strokes behind the champion, David Duval. Following this incident, Woosnam struggled in subsequent majors, missing 20 cuts in 24 tournaments, a fact he likely still reflects on with regret.