

In 2013, Krejčíková and Siniaková, both aged 17, won three of the year's four junior Grand Slam doubles tournaments. History 2013–2017: Junior success and early professional years Siniaková and Krejčíková are respectively ranked by the WTA No. With additional wins at the 2020 Olympics and the 2021 WTA Finals, they are the only women's doubles team to complete the career Super Slam jointly.

They have won seven major tournaments and seven other Women's Tennis Association (WTA) titles. Czech tennis players Barbora Krejčíková and Kateřina Siniaková have formed a successful doubles tennis partnership since 2013.
