Flawless Halep claims opening set
Looking to assert herself after a shaky performance in the last round against Tatjana Maria, Halep was on the front foot from the beginning. After wasting two chances to break, she took her third chance when Kasatkina flew a forehand long. After saving a break point to hold, the Romanian broke again for a 3-0 lead.
Kasatkina was a mess and now barely winning points, she was broken to love. Halep served for the set and after the Russian saved one set point, another error gave Halep the first set in just 28 minutes, a long way back for the 20-year old now.
Halep fights back to claim the second set
It seemed to all be going the way of the odds-on favorite as she broke early in the second set for a 2-1 lead. A hold consolidated Halep's break and gave her a 3-1 advantage, seemingly on course for a routine win.
She nearly went up a double break in Kasatkina's next service game, but the Russian dug deep and held. That seemed to spur the 26th seed on as she won three more games on the trot to take a 5-3 lead and astonishingly, Kasatkina served for the set.
Halep found another gear and finished strong, winning the last four games, including eight of the final nine points to punctuate her win and send her to a fourth round meeting with 21st seed Carla Suarez Navarro. The Spaniard knocked off 14th seed Elena Vesnina 6-4, 6-4.