Watson tied for second at Asian Tour event and jumps from 12th to No. 8 in the rankings updated Monday. He pushes four players, including Webb Simpson, who is now 11th, each down one spot.
Charl Schwartzel had three 7-under-par 65s en route to a 25-under total of 263 in winning the Thailand tournament by by 11 strokes Sunday. He moves up four places to 23rd in the rankings. Thitphun Chuayprakong, who tied Watson for second, rockets more than 400 spots to No. 284.
Scott Jamieson won the weather-embattled Nelson Mandela Championships in South Africa, the first tournament on the 2012-13 European Tour calendar. That moves him from 167th to No. 115 in the rankings.