Began playing tennis at age 3 with mother, Illona, and father, Donald, Sr., who have coached him throughout his career.
Parents run South Fulton Tennis Center in College Park, Georgia.
Writes right-handed.
Favourite surface is hard, shot is volley andtournaments are Washington and US Open.
Favourite athletes are Michael Jordan, Pete Sampras and Tiger Woods.
SupportsAtlanta Falcons (NFL).
Enjoys playing table tennis and board games like Monopoly.
Only athlete in Newsweek Magazine's "Who's Next?" feature on 27 December 2004.
(UPDATED 7 JANUARY 2021)
Entered 2021 Delray Beach Q as No. 327 -- his lowest ranking since No. 335 on 4 June 2007 -- and is seeking 1st tour-level win since 2018 Washington 1R (d. Wawrinka).
Broke into Top 100 at age 18 on 19 November 2007, then achieved career-high No. 38 in 2012 before suffering 17-match losing streak.
Advanced to singles finals at 2011 Bangkok and 2015 Delray Beach, as well as doubles finals at 2015 Memphis w/Sitak and 2017 Roland Garros w/S. Gonzalez.
Played in US Open main draw for 14 straight years from 2005-18, reaching 4R in 2011 and 2015, while qualifying in 2009, 2013 and 2018.
Ended 2005 as World No. 1 junior and won 2005 Australian Open and 2007 Wimbledon boys’ singles titles, as well as 2005 US Open boys’ doubles title w/Clayton.
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