Australian Open 2015: Defending champ Wawrinka reaches 4th round
Tennis | January 24, 2015 12:37 ISTMelbourne, Australia: Defending champion Stan Wawrinka used service breaks to clinch all three sets on his way to a 6-4, 6-2, 6-4 win over Jarkko Nieminen in a third-round match Saturday at the Australian Open.Warwinka