Stan Wawrinka meets Novak Djokovic for the 26th installment of their ATP Head2Head series on Thursday.

Stan Wawrinka in action during his three-set win over Reilly Opelka at the Internazionali BNL d'Italia in Rome on Monday.

Stan Wawrinka in action during his three-set win over Reilly Opelka at the Internazionali BNL d'Italia in Rome on Monday.

Stan Wawrinka was competing in just his second tour-level match of the season on Monday in Rome.

Stan Wawrinka was competing in just his second ATP Tour match of the season on Monday in Rome.

Stan Wawrinka falls against Alexander Bublik in three sets on Monday in Monte Carlo.

Stan Wawrinka competes on Sunday in doubles alongside Felix Auger-Aliassime at the Monte-Carlo Country Club.

Novak Djokovic and Stan Wawrinka compete in a fun mini-match on Casino Square in Monte-Carlo on Saturday.

Stan Wawrinka was unable to convert three match points in his five-set loss to Marton Fucsovics at the Australian Open.

Stan Wawrinka rallies from a break down late in the third set to beat Alex Bolt on Friday.

Stan Wawrinka beats Mikhail Kukushkin in three sets to take a 3-2 lead in their ATP Head2Head series.

Stan Wawrinka will face Juan Ignacio Londero or Mikhail Kukushkin in his opening match at the Murray River Open in Melbourne.

Stan Wawrinka is the top seed at the Murray River Open in Melbourne.

Stan Wawrinka breaks Andrey Rublev's serve three times en route to a three-set victory against the Russian in Paris.

Stan Wawrinka, the No. 12 seed, hits 35 winners past Daniel Evans on Tuesday in Paris.

Stan Wawrinka wins his second consecutive three-set match to reach the St. Petersburg Open quarter-finals.

Stan Wawrinka saves three match points en route to a three-set victory against Daniel Evans in St. Petersburg on Monday.

Stan Wawrinka, the 2015 champion, battles Hugo Gaston on Friday at Roland Garros.

Stan Wawrinka, the 2015 champion, hits 51 winners to beat Dominik Koepfer on Wednesday at Roland Garros.

Stan Wawrinka had no problem with the heavy conditions Sunday, going unbroken in his first-round match against Andy Murray at Roland Garros.

Stan Wawrinka hits 42 winners en route to a straight-sets victory against Andy Murray in the first round at Roland Garros.

Stan Wawrinka beats Andy Murray for the fifth time on clay to reach the second round at Roland Garros.

Stan Wawrinka won each of his three Grand Slam trophies with Magnus Norman as his coach.

Stan Wawrinka is the champion at the 2020 Prague Open.