![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
![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
![Czech Republic's Denisa Allertova returns to Japan's Risa Ozaki during their Women's Singles Match on day two at the Wimbledon Tennis Championships in London Tuesday, July 4, 2017. (AP Photo/Tim Ireland Stock Czech Republic's Denisa Allertova returns to Japan's Risa Ozaki during their Women's Singles Match on day two at the Wimbledon Tennis Championships in London Tuesday, July 4, 2017. (AP Photo/Tim Ireland Stock](https://c8.alamy.com/comp/2MT9MGW/czech-republics-denisa-allertova-returns-to-japans-risa-ozaki-during-their-womens-singles-match-on-day-two-at-the-wimbledon-tennis-championships-in-london-tuesday-july-4-2017-ap-phototim-ireland-2MT9MGW.jpg)
Czech Republic's Denisa Allertova returns to Japan's Risa Ozaki during their Women's Singles Match on day two at the Wimbledon Tennis Championships in London Tuesday, July 4, 2017. (AP Photo/Tim Ireland Stock
![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
![Jo Konta "ruthless" as she beats Denisa Allertova to make it into Australian Open fourth round - Irish Mirror Online Jo Konta "ruthless" as she beats Denisa Allertova to make it into Australian Open fourth round - Irish Mirror Online](https://i2-prod.mirror.co.uk/incoming/article7230023.ece/ALTERNATES/s1200c/Jo-Konta.jpg)
Jo Konta "ruthless" as she beats Denisa Allertova to make it into Australian Open fourth round - Irish Mirror Online
![Denisa Allertova, of the Czech Republic, receives serve from Petra Kvitova, of the Czech Republic, during the first round of the U.S. Open tennis tournament, Tuesday, Aug. 27, 2019, in New York. ( Denisa Allertova, of the Czech Republic, receives serve from Petra Kvitova, of the Czech Republic, during the first round of the U.S. Open tennis tournament, Tuesday, Aug. 27, 2019, in New York. (](https://c8.alamy.com/comp/2MJA4H8/denisa-allertova-of-the-czech-republic-receives-serve-from-petra-kvitova-of-the-czech-republic-during-the-first-round-of-the-us-open-tennis-tournament-tuesday-aug-27-2019-in-new-york-ap-photovera-nieuwenhuis-2MJA4H8.jpg)
Denisa Allertova, of the Czech Republic, receives serve from Petra Kvitova, of the Czech Republic, during the first round of the U.S. Open tennis tournament, Tuesday, Aug. 27, 2019, in New York. (
![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
![Jo Konta "ruthless" as she beats Denisa Allertova to make it into Australian Open fourth round - Irish Mirror Online Jo Konta "ruthless" as she beats Denisa Allertova to make it into Australian Open fourth round - Irish Mirror Online](https://i2-prod.irishmirror.ie/incoming/article7230034.ece/ALTERNATES/s615b/Denisa-Allertova.jpg)
Jo Konta "ruthless" as she beats Denisa Allertova to make it into Australian Open fourth round - Irish Mirror Online
![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)