ROCHESTER, N.Y. ?Yani Tseng left no doubt she's the best female player in the world, running away with the LPGA Championship by 10 strokes Sunday and, at 22, becoming the youngest to win four LPGA majors. The top-ranked Tseng closed with a 6-under 66 to finish 19-under 269 at Locust Hill Country Club, matching the LPGA record low score at a major in winning $375,000 at the $2.5 million event. And her dominating performance came a year after Cristie Kerr shot the same score to win the tournament by a whopping 12 strokes.