![Colette Lewis on Twitter: "With AO semifinalist Aslan Karatsev now into ATP Dubai semis, time for #tbt 10 years ago, when he played USO Jrs, losing in Rd 2 to Filip Horansky. Colette Lewis on Twitter: "With AO semifinalist Aslan Karatsev now into ATP Dubai semis, time for #tbt 10 years ago, when he played USO Jrs, losing in Rd 2 to Filip Horansky.](https://pbs.twimg.com/media/EwyeEDUWQA4KGd7.png)
Colette Lewis on Twitter: "With AO semifinalist Aslan Karatsev now into ATP Dubai semis, time for #tbt 10 years ago, when he played USO Jrs, losing in Rd 2 to Filip Horansky.
![Confidence key for late bloomer Aslan Karatsev as red-hot Russian surges up ATP rankings - Tennis365 Confidence key for late bloomer Aslan Karatsev as red-hot Russian surges up ATP rankings - Tennis365](https://d2me2qg8dfiw8u.cloudfront.net/content/uploads/2021/03/25130650/Aslan-Karatsev-on-the-charge.jpg)
Confidence key for late bloomer Aslan Karatsev as red-hot Russian surges up ATP rankings - Tennis365
![Australian Open: World No. 114 Aslan Karatsev Stuns Felix Auger-Aliassime To Reach First Major QF | ATP Tour | Tennis Australian Open: World No. 114 Aslan Karatsev Stuns Felix Auger-Aliassime To Reach First Major QF | ATP Tour | Tennis](http://www.atptour.com/-/media/images/news/2021/02/14/04/37/karatsev-australian-open-2021-r4-fh.jpg)
Australian Open: World No. 114 Aslan Karatsev Stuns Felix Auger-Aliassime To Reach First Major QF | ATP Tour | Tennis
![Karatsev: 'Am I Surprised? I Try Not To Show It' - 2021 Australian Open Match Reaction | ATP Tour | Tennis Karatsev: 'Am I Surprised? I Try Not To Show It' - 2021 Australian Open Match Reaction | ATP Tour | Tennis](https://www.atptour.com/en/news/www.atptour.com/-/media/images/news/2021/02/14/09/35/karatsev-australian-open-2021-sunday2.jpg)