Top seed Iga Swiatek suffered a shock third-round exit at Wimbledon as she fell to world number 35 Yulia Putintseva.
Putintseva fought back from a set down to stun Poland's Swiatek 3-6 6-1 6-2.
"It feels really, really great," said Putintseva, who plays Latvian 13th seed Jelena Ostapenko in the last 16.
"I was feeling it on the court and that is why I was like fire. I was trying to entertain you more and more with my shots."
Elsewhere on Saturday, Tunisian two-time finalist Ons Jabeur lost 6-1 7-6 (7-4) to Ukraine's Elena Svitolina.
Elena Rybakina, the 2022 champion, defeated Danish wildcard and former world number one Caroline Wozniacki 6-0 6-1.