The former world No. 1 and 2015 champion scored a 19th straight win over her compatriots with a victory against in-form Sorana Cirstea.

Two of 2021’s standout performers will face off for a spot in the semifinals of the WTA 500-level event.

Meanwhile, Paula Badosa takes on Australian No. 2 Ajla Tomljanovic in her first Grand Slam as a Top 10 player.

But the day's best match of all may be Nick Kyrgios vs. Felix Auger-Aliassime.

Playing in her first tournament in over 15 months, Andreescu couldn't overcome the tricky 35-year-old, while Serena had no trouble against Nina Stojanovic.

The former No. 21 finished at No. 86 on the 2020 year-end rankings, but she’ll head into 2021 just outside the Top 70 after winning the biggest event of the post-season.

Kiki Bertens virtually defended her actual 2019 Madrid Open title, while pre-tournament favorite Andy Murray fulfilled his destiny thanks to a selfless act by Diego Schwartzman.

The defending Madrid women's champion retained her crown, virtually, after dispatching Fiona Ferro, 6-2, on Thursday.

Whether Andy Murray is the best gamer of the bunch remains to be seen, but he's certainly the best trash talker. Meanwhile, Caroline Wozniacki and David Goffin each bageled their quarterfinal opponents.