World Number One
On 17th July 2017 she became the world number one as the first-ever Czech female player.
3 WTA Tour Singles Titles
In 2017, Karolína won 3 WTA Tour singles titles – in Brisbane (Australia), Doha (Qatar), and Eastbourne (UK).
French Open Semifinal
On clay, her least favorite surface, she fought her way all the way to the semifinal of the prestigious Grand Slam, losing in the end only to Simona Halep in a three-set battle.