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Tursunov, a 24-year-old Russian who lives in northern California, moved to the United States when he was 12. He helped Russia reach the Davis Cup final in 2006 by going 4-0 in singles matches, including a thrilling five-set victory over Andy Roddick, in which Tursunov won the fifth set, 17-15.

Tursunov also won his first career title in 2006 and finished the year ranked No. 22. He is currently 2-2 this year after losing to Evgeny Korolev at the Pacific Life Open last week.

In addition, Dmitry has an extremely popular blog on ATPTennis.com.

Send in your questions for Dmitry now, then stop back at 4:30 p.m. ET to see what he has to say.