Sergei Sergeevich Bubka is a Ukrainian former professional tennis player. He was a member of the Ukraine Davis Cup team and was coached by Tibor Toth, who is also the former coach of Sergiy Stakhovsky. Bubka is the son of pole vaulter Sergey Bubka.
Career summary
Sergei's biggest success in his career was beating the 5th-seeded Ivan Ljubičić in the first round of the 2011 Dubai Tennis Championships. He also hit a 157 MPH serve during qualifying for the 2011 US Open, which would have been the record had the serve not been out. ==ATP Challenger and ITF Futures titles==