SERGIO Garcia could have a tough time defending his Thailand Golf Championship title.

American Ryder Cup stars Bubba Watson and Martin Kaymer will be joining the star-studded line up at the Amata Spring Country Club for the four-day event in December.

Spain’s Garcia has said he ‘cannot wait to return’ to the ‘Land of Smiles’.

European Ryder Cup heroes – Lee Westwood and Victor Dubuisson – are also set to compete in the Asian Tour’s €780,000 flagship tournament alongside South African legend Ernie Els.

In it’s fourth year, the Thailand Golf Championship has been added to the Open Qualifying Series (OQS), with four places at the 2015 Open up for grabs.