Nadal, Federer and Ferrer All Advance at ATP World Tour Finals
Spain’s Rafael Nadal defeated American Mardy Fish 6-2, 3-6, 7-6 (3) at the ATP World Tour Finals on Sunday at The O2 Arena in London, England in a three-hour-plus marathon match. Nadal overcame a stomach ailment to defeat Fish in opening round action in Group B. "I felt very bad from the stomach since the beginning of…

