World number two Rafael Nadal has pulled out of next week's Thailand Open Tennis Tournament at Bangkok because of an abdominal injury. Nadal admitted that the injury contributed to his US Open semi-final defeat by Argentine Juan Martin del Potro on September, 13th. He is expected to be sidelined for two to three weeks. Frenchman Jo-Wilfried Tsonga, the defending champion, will be top seed for the Bangkok event.