PARIS, France - The Czech tandem of Barbora Krejcikova and Katerina Siniakova are back in the semifinals of the French Open, after the No.6 seeds upset No.3 seeds Andreja Klepac and María José Martínez Sánchez in Tuesday's quarterfinals, 6-3, 6-3.

Having partnered Krejcikova to the semifinals in 2016 and 2018, Siniakova is back in the final four in Paris for the third straight year, as she also advanced to the semifinals last year alongside another Czech in Lucie Hradecka. 

The duo has never advanced to a Grand Slam final together, though Siniakova played in the US Open final last season with Hradecka, and will have the opportunity to do that against the winner of tomorrow's quarterfinal between Lara Arruabarrena and Katarina Srebotnik, and compatriots and No.2 seeds Andrea Sestini Hlavackova and Barbora Strycova. 

The other team to book its spot in the semifinals on Tuesday was No.8 seeds Chan Hao-ching and Yang Zhaoxuan, who ended the dream run of unseeded Romanians Irina Bara and Mihaela Buzarnescu, 6-3, 1-6, 6-4.

Bara and Buzarnescu had knocked out Chan's elder sister Latisha and her partner Bethanie Mattek-Sands, the No.4 seeds, earlier in the fortnight, but the 24-year-old from Chinese Taipei and her 23-year-old partner exacted a measure of revenge despite nearly losing a 5-2 lead in the final set. 

Chan and Yang will next face the winner of the final quarterfinal between top seeds and Australian Open champions Timea Babos and Kristina Mladenovic and the unseeded Japanese team of Eri Hozumi and Makoto Ninomiya.

There's more than another Grand Slam doubles title on the line for Babos this fortnight: after opening round defeats by both Elena Vesnina and Ekaterina Makarova with different partners, the Hungarian prevent the Russians from jointly reaching World No.1 and ascend there herself should she and Mladenovic keep winning to advance to the final.