He survived and against Steve Johnson -- the highest - ranked player not seeded -- Wawrinka cruised in straight sets .
Stan Wawrinka , the 2014 champ , came dangerously close to losing his first match against the Slovenian lefty Martin Klizan .
Stan Wawrinka survived and against Steve Johnson -- the highest - ranked player not seeded -- Stan Wawrinka cruised in straight sets .
Stan Wawrinka , the 2014 champ , came dangerously close to losing his first match against the Slovenian lefty Martin Klizan .