Andy Murray can start to look ahead at the French Open after defusing the power game of Juan Martin del Potro to reach the fourth round. His shaky form was expected to be challenged by Del Potro, a former world number four and semi-finalist at Roland Garros in 2009.
It looked a nightmare draw against a player falsely low in the rankings as he continues to work his way back up after wrist problems that nearly ended his career.
While Murray won that affair too - and their only previous meeting at a major - del Potro had triumphed in their most recent clash, so the Scot had been alert to the dangers.
"It was a very good first set and I was a bit hesitant, but after that I relaxed", Wawrinka said.
Out on Suzanne Lenglen court, world number 50 Klizan smashed 57 winners but 67 unforced errors as his all-or-nothing game proved in vain against top seed Murray.
"Whoever won that first set had big momentum", said the British tennis player after the match.
"It's a tough match, not an easy third round". This is one of the most important tournaments of the year. But mentally I feel pretty good just now.
"That's been the case so far".
"The Olympics was physically hard and hard psychologically, but I had also come off a period of rest and trained and prepared for it".More news: Trump accuses Comey of lying to Congress
He retrieved it when Murray served for the set in the 10th game before handing the advantage straight back. Sometimes his balls would then go cross-court diagonally and only very, very few smart players can do that.
But a double fault from the Argentinian made it 7-7 and it was Murray who took his third set point when Del Potro's forehand landed just wide.
Del Potro, who has also dealt with a slew of injuries over the course of his 12-year career, empathized with Almagro and tried to take his mind off of tennis.
"I couldn't believe that I lost that set, because I had many opportunities to win", he said. The players split the first two sets.
He had two set points at 5-3 before Murray clawed it back level by converting his sixth break point.
A premature exit from the Australian Open and a tepid clay court campaign thus far meant Murray was far from certain to repeat his victory over Del Potro from last year's Olympic singles final.
Three third-round men's matches are scheduled to resume: No. 8 Kei Nishikori against Hyeon Chung, No. 15 Gael Monfils against No. 24 Richard Gasquet, and No. 21 John Isner against Karen Khachanov. "The second or third sets were the best I have played, for sure".
"It's slow and heavy and coming back in these conditions is hard".
Del Potro came into the match nursing a groin injury, and was a doubt for the tournament because of shoulder and back problems, but he credited Murray for turning the match around.