DOHA, Qatar – Jelena Ostapenko sprung the latest shock at this year’s Qatar Total Open, battling back to knock out No.5 seed Petra Kvitova.

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Seeds have been falling like dominoes in the opening few rounds and Kvitova’s 5-7, 6-2, 6-1 defeat means that just four of the original 16 remain.

At last year’s Wimbledon, Ostapenko defeated Carla Suárez Navarro in a coming of age performance, imbuing her with the confidence to topple even bigger names. “It gave me kind of confidence that I can play at that level,” Ostapenko said when reminded afterwards of her win over the Spaniard. “Today, I’m just happy that I could play my best tennis.”

Kvitova started brightly enough, recovering from 3-1 down to take the opening set. But as the contest wore on, the Czech cut an increasingly passive figure on the court, spending more and more time pinned behind the baseline.

Ostapenko, meanwhile, continued to exhibit the fleet-footedness befitting a former ballroom dancer; at 2-2 in the second set she flew across the court to unleash a fizzing forehand that left Kvitova grounded and, more importantly, a break down.

The two-time Wimbledon champion did not win another game until midway through the decider and by that point the tide had well and truly turned. Showing no sign of nerves, the young Latvian confidently cruised to victory, breaking Kvitova for an eighth and final time.

Ostapenko’s positivity was born out in the numbers, outlanding the Czech 28 to 16 in the winners count. “I play more matches, get some wins and I think [confidence] comes from there,” Ostapenko added.

Her reward for this incredible performance is a meeting with another of the draw’s giant slayers, Zheng Saisai, who followed up her victory over top seed Angelique Kerber by knocking out Eugenie Bouchard, 7-6(1), 6-1. 

“She’s had some really great wins this week,” Ostapenko said when asked about her quarterfinal foe. “I’m looking forward to it and hopefully we can have a great match.”