The world number one ranking for golf is on the line in Shanghai as top golfers converged in China's financial capital ahead of the WGC-HSBC Champions golf tournament.
Newly-crowned world number one Lee Westwood, Americans Tiger Woods, Phil Mickelson and Germany's Martin Kaymer are among those vying for the title in the big money event.
If Westwood wins on Sunday he will stay top of the world rankings but Woods, Mickelson or Kaymer could become number one with victory in Shanghai.
The quartet took time off to attend a promotional event for the tournament as they took lessons from a Chinese martial arts expert on sword play in front of the world's media.
The 14-times major champion Woods had been the game's leading player for the previous 281 weeks, and a total of 623 in his career, before he was finally toppled by the Englishman Westwood.
But, showing there were no hard feelings, Woods and Westwood smiled broadly as they crossed swords for the benefit of photographers.