Agnieszka Radwanska pulls off a major upset on the opening day of tennis ' U.S. Open . Evans , ranked first , beats Ahead of the U.S. Open , Evans reached challenger finals in Vancouver and California to see his ranking move from around 250 to his current 179 . No . 6 seed Kei Nishikori in straight sets in New York . Venus Williams , Agnieszka Radwanska and Li Na were first -round women 's winners . Daniel Evans will retire after the U.S. Open , putting an end to his 14-year pro career .
Agnieszka Radwanska pulls off a major upset on the opening day of tennis ' U.S. Open . Evans , ranked first , beats No . 6 seed Kei Nishikori in straight sets in New York . Venus Williams , Agnieszka Radwanska and Li Na were first -round women 's winners . Daniel Evans will retire after the U.S. Open , putting an end to his 14-year pro career .