Federer ends late night at Key Biscayne with rout

KEY BISCAYNE, Fla. (AP) -- Mardy Fish has reached the quarterfinals at the Sony Ericsson Open for the first time in his 12-year career by beating Juan Martin del Potro 7-5, 7-6 (5).

Source: http://rss.cnn.com/~r/rss/si_tennis/~3/xM4Tzq-e8OI/index.html

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