Andy Murray has won Grand Slam titles on grass and hard court.
The former world No. 1 is adapting to a new surface these days.
Watch: Kyrgios Commits To Fitness
Murray put his surgically-repaired him to the test with this sand session relay workout he posted to Instagram.
"Relay race ended in defeat," Murray wrote. "Almost clawed it back at the end 👎👎👎 too embarrassed to post the whole race due to my partners effort #tanked."
The 31-year-old Scot skipped Wimbledon in order to rest and recover for the North American hard-court season.
Murray is scheduled to play the Citi Open in Washington, DC next week.