Karen Khachanov saves five match points to defeat Philipp Kohlschreiber at the VTB Kremlin Cup on Wednesday.

Karen Khachanov is the VTB Kremlin Cup defending champion.

Karen Khachanov owns a 25-21 tour-level record this year.

Fourth seed Karen Khachanov grows in confidence during his quarter-final victory over Fabio Fognini on Friday in Beijing.

Karen Khachanov hits 13 aces on Wednesday and advances to the third round in Cincinnati.

Karen Khachanov is looking to win his second ATP Masters 1000 title this week in Cincinnati.

Karen Khachanov evens his FedEx ATP Head2Head series against Alexander Zverev with a straight-sets win in Montreal.

Karen Khachanov is going for his second ATP Masters 1000 title this week in Montreal.

Tenth seed Karen Khachanov books his place in the Wimbledon third round on Wednesday for the third consecutive year.

Karen Khachanov was ranked outside the Top 35 of the ATP Rankings just 12 months ago.

Karen Khachanov improves to 1-0 against Jan-Lennard Struff in their FedEx ATP Head2Head series.

Karen Khachanov seeks his first grass-court title this week in Halle.

Karen Khachanov celebrates his win against Juan Martin del Potro at Roland Garros, advancing to his first major quarter-final.

Karen Khachanov earns his first win against Juan Martin del Potro to reach the Roland Garros quarter-finals.

Karen Khachanov streaks past Martin Klizan to reach the fourth round at Roland Garros.

Karen Khachanov, the No. 10 seed, hit 21 winners in a confidence-boosting win over Cedrik-Marcel Stebe on Tuesday in Roland Garros.

Karen Khachanov defeats Jaume Munar on Monday in Madrid to snap a five-match losing streak.

Rafael Nadal improves to 6-0 in his FedEx ATP Head2Head series against Karen Khachanov.

Karen Khachanov and Stan Wawrinka, who will meet in the Doha first round, have only clashed once previously, a match won by Wawrinka.

Novak Djokovic, Dominic Thiem, Stan Wawrinka and Karen Khachanov wear traditional Qatari men's attire while walking the Katara Beach on Sunday.

Karen Khachanov and Stan Wawrinka will clash against one another in the first round in Doha.

Karen Khachanov captures his third tour-level trophy of the season at the Rolex Paris Masters on Sunday.

Novak Djokovic will return to No. 1 in the ATP Rankings on Monday.

Karen Khachanov celebrates his maiden ATP World Tour Masters 1000 title in Paris.

Karen Khachanov defeats Dominic Thiem to reach his first ATP World Tour Masters 1000 final.