Wawrinka Begins ATP World Tour Finals With Win Over Berdych
Stanislas Wawrinka defeated Tomas Berdych for the third consecutive time this year to open up action at the 2013 Barclays ATP World Tour Finals, 6-3, 6-7(0), 6-3 in the Group A opener. It was Wawrinka's 50th match win of the season. Aggressive throughout the pair’s 13th FedEx ATP Head2Head meeting, Wawrinka hit 43 winners and committed 42 unforced errors…

