In his final round of the 2001 British Open Ian Woosnam had 15 clubs in his bag. What was the additional club?

Ian Woosnam had an additional driver in his bag.

More about Ian Woosnam having 15 Clubs in his bag

At the 2001 British Open Ian Woosnam was in contention to win his first open at Royal Lytham & St. Anne’s. He was tied for the lead with three others after the third round. On the final day he started his round with a birdy at the opening par 3. Then the drama unfolded. His caddie, Myles Byrne, came up to him and said, “You’re going to go ballistic” – “We’ve got two drivers in the bag” as he pointed out the extra driver. That meant Woosnam was carrying 15 clubs, which indeed is a two-stroke penalty.

2001 British Open Leaderboard

David Duval -10
Niclas Fasth -7
Darren Clarke, Ernie Els, Miguel Ángel Jiménez, Bernhard Langer, Billy Mayfair and Ian Woosnam -6

The British Open