Serena Williams reaches seventh U.S. Open final , beating fifth seed Li Na . She has won four of those , suffering defeat in 2001 and 2011 . - Tennis : Victoria Azarenka in Sunday 's final . Azarenka defeats 83rd-ranked Flavia Pennetta in opening semifinal . She lost to Williams in last year 's title match at Flushing Meadows .
Serena Williams reaches seventh U.S. Open final , beating fifth seed Li Na . - Tennis : Victoria Azarenka in Sunday 's final . Azarenka defeats 83rd-ranked Flavia Pennetta in opening semifinal . She lost to Williams in last year 's title match at Flushing Meadows .