Andy Murray has a 8-5 record over Stanislas Wawrinka. Emmanuel Dunand / AFP
Andy Murray has a 8-5 record over Stanislas Wawrinka. Emmanuel Dunand / AFP
Andy Murray wary of Stanislas Wawrinka at US Open tennis
Defending champion feels Swiss player has developed the confidence to create an upset in the quarter-finals on Thursday.
Agencies
September 05, 2013
