Big-serving American Querrey, champion in 2010, calmly ticked off the next three games to move into the quarter-finals where he will meet either top seed Marin Cilic or Gilles Muller. "You start all over again".
But first Wawrinka had business of his own to attend to, as he claimed only his fifth victory of 2018 over British No. 2 Cameron Norrie. You can't live on the glory from previous year.
"People might say, "oh, you've got it great" - which I'm aware that we do, and I'm very lucky I get to play tennis for a living".
"I feel good. My elbow is fine and I played three quality matches in Stuttgart".
Wawrinka has struggled to return to peak form since suffering a left knee injury a year ago that required two operations and wiped out the second half of the Swiss star's season.
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'I need to be really patient with myself, to accept less in a way, because when you win Grand Slam and especially me, I always expect so much from myself and always push myself to the maximum and never really happy with what I'm doing, so when you be out on the tour so long, you need to a little bit put your expectation a little bit lower and accept that, because it takes time. "The grass-court season, it's short but it's sweet as well". I served well and I'm happy to be back healthy and fit, ' said Wawrinka.
Cilic, first seed of the tournament and champion in 2012, had no problems on Monday defeating Verdasco, who had little chance and had a hard time adapting to the tactics of the Croatian, whose two breaks were enough to close his pass to the second round by 6-3 and 6-4, reports Efe.
The Swiss squandered several set points in the opening set and although he took the second on a tiebreak he capitulated in the decider after dropping serve at 1-2, losing 7-5 6-7 (3) 6-1.
Murray is playing Nick Kyrgios in his first competitive match in 342 days, British number one Kyle Edmund is up against American Ryan Harrison and Evans, making his ATP Tour return following a drugs ban, faces Frenchman Adrian Mannarino.