Byeong Hun An stormed to victory at the BMW PGA to claim his first career title. An, 23, shot a final round 65 to finish three shots clear of his nearet challengers Miguel Angel Jimenez and Thongchai Jaidee. 

It really was an extraordinary performance by the South Korean, who finally fulfilled the potential he's shown since becoming the youngest winner of the US Amateur Championship in 2009 at the age of 17. His final total of 21 under par was a tournament record and moves him all the way up to third in the Race To Dubai rankings. 

So, what was in An's bag?