![Czech tennis player Denisa Allertova plays against Maria Sakkari of Greece during the women Advantage Cars Prague Open by Zenova - ITF in Prague, Czech Republic, on Wednesday, August 12, 2015. (CTK Czech tennis player Denisa Allertova plays against Maria Sakkari of Greece during the women Advantage Cars Prague Open by Zenova - ITF in Prague, Czech Republic, on Wednesday, August 12, 2015. (CTK](https://c8.alamy.com/comp/F0CA5C/czech-tennis-player-denisa-allertova-plays-against-maria-sakkari-of-F0CA5C.jpg)
Czech tennis player Denisa Allertova plays against Maria Sakkari of Greece during the women Advantage Cars Prague Open by Zenova - ITF in Prague, Czech Republic, on Wednesday, August 12, 2015. (CTK
![Denisa Allertova, of the Czech Republic, returns a volley from Angelique Kerber during their match at the BNP Paribas Open tennis tournament, Saturday, March 12, 2016, in Indian Wells, Calif. (AP Photo/Mark Denisa Allertova, of the Czech Republic, returns a volley from Angelique Kerber during their match at the BNP Paribas Open tennis tournament, Saturday, March 12, 2016, in Indian Wells, Calif. (AP Photo/Mark](https://c8.alamy.com/comp/2N03M0T/denisa-allertova-of-the-czech-republic-returns-a-volley-from-angelique-kerber-during-their-match-at-the-bnp-paribas-open-tennis-tournament-saturday-march-12-2016-in-indian-wells-calif-ap-photomark-j-terrill-2N03M0T.jpg)
Denisa Allertova, of the Czech Republic, returns a volley from Angelique Kerber during their match at the BNP Paribas Open tennis tournament, Saturday, March 12, 2016, in Indian Wells, Calif. (AP Photo/Mark
![Tennis player Denisa Allertova, member of the Czech Republic Fed Cup team (CTK Photo/Pavel Lebeda), Stock Photo, Picture And Rights Managed Image. Pic. CKP-F201603151001801 | agefotostock Tennis player Denisa Allertova, member of the Czech Republic Fed Cup team (CTK Photo/Pavel Lebeda), Stock Photo, Picture And Rights Managed Image. Pic. CKP-F201603151001801 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/2f0e45c98e22c14f921f94ed6005e123/ckp-f201603151001801.jpg)
Tennis player Denisa Allertova, member of the Czech Republic Fed Cup team (CTK Photo/Pavel Lebeda), Stock Photo, Picture And Rights Managed Image. Pic. CKP-F201603151001801 | agefotostock
![Johanna Konta stuns Denisa Allertova to march into last 16 at Australian Open | Johanna Konta | The Guardian Johanna Konta stuns Denisa Allertova to march into last 16 at Australian Open | Johanna Konta | The Guardian](https://i.guim.co.uk/img/media/86eff7f46021a1d061e4c54f3987d9e68c49b2e7/134_0_2761_1657/master/2761.jpg?width=1200&height=630&quality=85&auto=format&fit=crop&overlay-align=bottom%2Cleft&overlay-width=100p&overlay-base64=L2ltZy9zdGF0aWMvb3ZlcmxheXMvdGctZGVmYXVsdC5wbmc&s=30c0e89e793c640293fcb1070df85d0c)
Johanna Konta stuns Denisa Allertova to march into last 16 at Australian Open | Johanna Konta | The Guardian
![Denisa Allertova of the Czech Republic reacts after losing a point to Ukraine's Elina Svitolina during their fourth round match at the Australian Open tennis championships in Melbourne, Australia Monday, Jan. 22, Denisa Allertova of the Czech Republic reacts after losing a point to Ukraine's Elina Svitolina during their fourth round match at the Australian Open tennis championships in Melbourne, Australia Monday, Jan. 22,](https://c8.alamy.com/comp/2MP5AFN/denisa-allertova-of-the-czech-republic-reacts-after-losing-a-point-to-ukraines-elina-svitolina-during-their-fourth-round-match-at-the-australian-open-tennis-championships-in-melbourne-australia-monday-jan-22-2018-ap-photong-han-guan-2MP5AFN.jpg)
Denisa Allertova of the Czech Republic reacts after losing a point to Ukraine's Elina Svitolina during their fourth round match at the Australian Open tennis championships in Melbourne, Australia Monday, Jan. 22,
![Czech tennis player Denisa Allertova plays against Maria Sakkari of Greece during the women..., Stock Photo, Picture And Rights Managed Image. Pic. CKP-P201508120502001 | agefotostock Czech tennis player Denisa Allertova plays against Maria Sakkari of Greece during the women..., Stock Photo, Picture And Rights Managed Image. Pic. CKP-P201508120502001 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/5be5483008a50ca3336794c84becabe8/ckp-p201508120502001.jpg)
Czech tennis player Denisa Allertova plays against Maria Sakkari of Greece during the women..., Stock Photo, Picture And Rights Managed Image. Pic. CKP-P201508120502001 | agefotostock
![Tennis player Denisa Allertova, member of the Czech Republic Fed Cup team (CTK Photo/Pavel Lebeda), Stock Photo, Picture And Rights Managed Image. Pic. CKP-F201603151002701 | agefotostock Tennis player Denisa Allertova, member of the Czech Republic Fed Cup team (CTK Photo/Pavel Lebeda), Stock Photo, Picture And Rights Managed Image. Pic. CKP-F201603151002701 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/d3bc016ff69c755189da73558b7a8850/ckp-f201603151002701.jpg)