Rafael Nadal knocked out by Australian teenager Nick Krygios . The world number one was forced to retire in the second round of Wimbledon after being beaten 7-6 6-4 6-3 by his fellow Spaniard who is ranked a lowly 149th in the world. In the women 's draw , last year 's finalist Sabine Lisicki overcame a scare against Yaroslava Shvedova of Kazakhstan . Roger Federer to face compatriot Stanislas Wawrinka . Serena Williams retires from doubles with viral illness .
Rafael Nadal knocked out by Australian teenager Nick Krygios . The world number one was forced to retire in the second round of Wimbledon after being beaten 7-6 6-4 6-3 by his fellow Spaniard who is ranked a lowly 149th in the world. Roger Federer to face compatriot Stanislas Wawrinka . Serena Williams retires from doubles with viral illness .