Daniil Medvedev of Russia serves to Filip Krajinovic of Serbia during their third round match at ATP-WTA Indian Wells tennis tournament on October 11, 2021 in Indian Wells, California. (AFP)
Medvedev, the U.S. Open champion, connected on 70% of his first serves and fired four aces despite challenging weather conditions.
Haddad Maia got into the main draw as a lucky loser. She lost in the final round of qualifying and got in when No. 29 seed Nadia Podoroska withdrew with a thigh injury. Haddad Maia inherited Podoroska's first-round bye and then beat Mayir Sherif in the second round.
Ranked 115th, the Brazilian reached the round of 16 at a WTA 1000 event for the first time.
On a windy day at the Indian Wells Tennis Garden, Pliskova held serve to tie the second set 5-5, but she got broken eight times in the match. Haddad Maia held and then broke Pliskova in the final game to wrap up her second career win over a Top-5 player.
No. 15 Coco Gauff lost to 21st-seeded Paula Badosa 6-2, 6-2 in a match that was briefly suspended by rain on a night of wild weather in the desert.
No. 10 Angelique Kerber defeated 20th-seeded Daria Kasatkina 6-2, 1-6, 6-4. No. 12 Ons Jabeur beat Danielle Collins 6-1, 6-3 for her Tour-leading 46th match win of the year.
No. 16 seed Bianca Andreescu, the 2019 champion, lost to 18th-seeded Anett Kontaveit 7-6 (5), 6-3.
On the men's side, No. 6 Casper Ruud outlasted Lloyd Harris 6-7 (4), 6-4, 6-4. No. 8 Hubert Hurkacz and 10th-seeded Diego Schwartzman advanced. No. 16 Reilly Opelka lost to 23rd-ranked Grigor Dimitrov 6-3, 6-4.
No. 9 Denis Shapovalov was beaten by 19th-seeded Aslan Karatsev 7-5, 6-2.