Women's fourth seed Sloane Stephens has lost in the first round at Wimbledon. Clive Mason / Getty Images
Women's fourth seed Sloane Stephens has lost in the first round at Wimbledon. Clive Mason / Getty Images
US Open champion Sloane Stephens out in first round at Wimbledon
American No 4 seed loses to Donna Vekic as men's defending champion Roger Federer charges through his opening match
