Karen Khachanov grew up in Moscow and started playing tennis at the age of 3. When Kachanov was young, he attended the Kremlin Cup many times and watched Yevgeny Kafelnikov, Nikolay Davydenko and Marat Safin in action. His idols growing up were Marat Safin and Juan Martin Del Potro.
Khachanov is represented by boutique sports management firm Starwing. In addition to Khachanov, Swarwing manages Stan Wawrinka, Gael Monfils, Goran Ivanisevic, and Chris Evert.
Khachanov has apparel and shoe deal with Nike. Headquartered in Beaverton, Oregon, the well-known Nike is engaged in the design, development, manufacturing, marketing and, sales of footwear, apparel, equipment, and accessories.
Karen Khachanov is a brand ambassador for car manufacturer Mercedez- Benz. Mercedes-Benz, based in Stuttgart, Germany sponsors many tennis players and tournaments.
Swiss luxury watchmaker, Rolex signed up Khachanov in 2019. With Rolex, Khachanov joins a list of well-known players wearing Rolex including Roger Federer.