The Australian golfer, Adam Scott's celebrated his first week as world number one in emphatic fashion by winning the Crowne Plaza Invitational in Texas.
Last year's Masters champion notched his 24th professional victory by beating the American Jason Dufner in a playoff at Colonial Country Club in Fort Worth.
Scott sank a seven-foot birdie putt at the third extra hole to become the fourth Australian to win at Colonial.
Earlier, Dufner and Scott both shot 66 to finish on nine-under-par 271, one shot ahead of the American Nicholas Thompson and the Swede David Lingmerth.
The New Zealander, Danny Lee, closed with an even par 70 to finish in a tie for 38th, while Tim Wilkinson struggled to a 74 to finish tied for 51st.