Andrea Sestini Hlaváčková and
Lucie Hradecká were the defending champions having won the previous edition in
2013, but Hradecká chose to compete at the
2021 Prague Open instead, whilst Sestini Hlaváčková retired from professional tennis in 2019.
Bold denotes the mandatory tournaments (WTA 1000) † – Tournaments are affected by the
COVID-19 pandemic * – Tournaments are introduced due to the impact of the COVID-19 pandemic