2015: Suspension due to doping On 27 May 2015, the
International Tennis Federation announced that Kozlova has been found to have committed an anti-doping rule violation. She was found positive to a doping substance after taking a stimulant,
dimethylbutylamine. Kozlova's suspension was reduced to six months starting from 15 February to 15 August 2015.
2018: First top-5 win and maiden WTA Tour final In February, Kozlova reached her first WTA Tour final at the
Taiwan Open, defeating
Sabine Lisicki in the semifinals, before losing the championship match to
Timea Babos. At the
French Open in May, she became the second player to defeat a defending champion in the first round of the French Open, after a straight sets victory over 2017 champion
Jeļena Ostapenko.
2022: Poland Open semifinal Having lost in qualifying, Baindl gained entry to the
Poland Open as a lucky loser where wins over 11th seed
Maryna Zanevska, qualifier
Sara Errani and eighth seed
Petra Martić, saw her reach the semifinals. She lost to
Ana Bogdan in the last four. At the
Emilia-Romagna Open in Parma, she qualified into the main draw where she was defeated by world No. 7 and top seed,
Maria Sakkari.
2023-2024: Australian Open third round At the
2023 Australian Open, Baindl defeated
Kamilla Rakhimova and
Caty McNally to reach the third round of a Grand Slam tournament for the first time in her career. She lost to 17th seed Jeļena Ostapenko. Baindl reached her second career singles final at the
2023 Budapest Grand Prix, defeating
Claire Liu in the semifinals. She lost to lucky loser
Maria Timofeeva in the final. She used a protected ranking to get into the
2024 Wimbledon Championships and the
2024 US Open, but lost in the first round at both events, in straight sets to
Laura Siegemund, and to
Elisabetta Cocciaretto, respectively. ==Performance timeline==