![Ukraine's Sergei Bubka, returns the ball to Jo-Wilfried Tsonga of France during the Qatar ATP Open Tennis tournament in Doha, Qatar, Wednesday, Jan. 5, 2011. (AP Photo/Hassan Ammar Stock Photo - Alamy Ukraine's Sergei Bubka, returns the ball to Jo-Wilfried Tsonga of France during the Qatar ATP Open Tennis tournament in Doha, Qatar, Wednesday, Jan. 5, 2011. (AP Photo/Hassan Ammar Stock Photo - Alamy](https://c8.alamy.com/comp/2NCEPK3/ukraines-sergei-bubka-returns-the-ball-to-jo-wilfried-tsonga-of-france-during-the-qatar-atp-open-tennis-tournament-in-doha-qatar-wednesday-jan-5-2011-ap-photohassan-ammar-2NCEPK3.jpg)
Ukraine's Sergei Bubka, returns the ball to Jo-Wilfried Tsonga of France during the Qatar ATP Open Tennis tournament in Doha, Qatar, Wednesday, Jan. 5, 2011. (AP Photo/Hassan Ammar Stock Photo - Alamy
![Sergei Bubka Jnr, son of pole vaulting great, seriously injured in fall from third floor of Paris apartment Sergei Bubka Jnr, son of pole vaulting great, seriously injured in fall from third floor of Paris apartment](https://www.telegraph.co.uk/multimedia/archive/02386/Sergei-Bubka_2386251b.jpg)
Sergei Bubka Jnr, son of pole vaulting great, seriously injured in fall from third floor of Paris apartment
![Mar 24, 2012; Sergei Bubka (UKR) in action against Geal Monflis (FRA) Monflis defeated Bubka 6-4, 6-4 in 2nd second round during the tennis match at the Sony Ericsson Open at Tennis Mar 24, 2012; Sergei Bubka (UKR) in action against Geal Monflis (FRA) Monflis defeated Bubka 6-4, 6-4 in 2nd second round during the tennis match at the Sony Ericsson Open at Tennis](https://c8.alamy.com/comp/2P6HNM6/mar-24-2012-sergei-bubka-ukr-in-action-against-geal-monflis-fra-monflis-defeated-bubka-6-4-6-4-in-2nd-second-round-during-the-tennis-match-at-the-sony-ericsson-open-at-tennis-center-at-crandon-park-in-miami-florida-cal-sport-media-via-ap-images-2P6HNM6.jpg)
Mar 24, 2012; Sergei Bubka (UKR) in action against Geal Monflis (FRA) Monflis defeated Bubka 6-4, 6-4 in 2nd second round during the tennis match at the Sony Ericsson Open at Tennis
![Sergei Bubka Jr.(UKR), Portrait, Portraet Tennis - Australian Open 2004 - Melbourne - Grand Slam - Melbourne Park - Australia - 2004 | Juergen Hasenkopf Photography Sergei Bubka Jr.(UKR), Portrait, Portraet Tennis - Australian Open 2004 - Melbourne - Grand Slam - Melbourne Park - Australia - 2004 | Juergen Hasenkopf Photography](https://m.psecn.photoshelter.com/img-get/I0000fh2RwQZR4Q0/s/1200/I0000fh2RwQZR4Q0.jpg)
Sergei Bubka Jr.(UKR), Portrait, Portraet Tennis - Australian Open 2004 - Melbourne - Grand Slam - Melbourne Park - Australia - 2004 | Juergen Hasenkopf Photography
![Ukraine's Sergei Bubka, returns the ball to Jo-Wilfried Tsonga of France during the Qatar ATP Open Tennis tournament in Doha, Qatar, Wednesday, Jan. 5, 2011. (AP Photo/Hassan Ammar Stock Photo - Alamy Ukraine's Sergei Bubka, returns the ball to Jo-Wilfried Tsonga of France during the Qatar ATP Open Tennis tournament in Doha, Qatar, Wednesday, Jan. 5, 2011. (AP Photo/Hassan Ammar Stock Photo - Alamy](https://c8.alamy.com/comp/2NCEPN0/ukraines-sergei-bubka-returns-the-ball-to-jo-wilfried-tsonga-of-france-during-the-qatar-atp-open-tennis-tournament-in-doha-qatar-wednesday-jan-5-2011-ap-photohassan-ammar-2NCEPN0.jpg)