STUTTGART, Germany – No.5 seed Petra Kvitova is into her first WTA semifinal of the year at the Porsche Tennis Grand Prix after overcoming a mid-match surge from Garbiñe Muguruza to advance 6-1, 3-6, 6-0.

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Kvitova grabbed the early break at 3-1 and roared ahead to a commanding lead. The combination of Kvitova’s tricky lefty serve and her powerful groundstrokes leaving Muguruza struggling to find her timing against the Czech, who broke once more to allow Muguruza just one game in the opening set. 

Muguruza changed tactics heading into the second set, playing more aggressively and taking away the pace from Kvitova’s heavy shots. A huge hold at 2-1 did wonders for Muguruza’s confidence as well, when she saw a healthy lead be wiped away but still fought off a break point to hold serve. Muguruza broke Kvitova’s serve for the first time at 4-2, winning the last four of five games to take the second set.

Despite all of the momentum swinging to the Spaniard’s favor, Kvitova – a two-time Grand Slam champion – drew from her long experience with three-set matches. She dominated in the final set, settling into the same strategy she used in the first set and keeping Muguruza back on her heels as the Spaniard’s errors – and double faults – piled up. A seventh double fault from Muguruza on match point sealed the match for Kvitova, sending the Czech into the semifinals.

“I think it’s very tough because I wasn’t playing bad, you know,” Muguruza said of the final set shutout. “I was running and trying to fight for every point but she was coming with great shots.

“And then, I was like, I’m playing good and it’s like 3-0, 4-0, 5-0. So, I know with this kind of players, with Petra if she’s playing good, she hits everything.”

Kvitova did the most damage on her serve – she hit six aces and no double faults, and only faced one break point all match long. She also kept her high-risk game in check, hitting a total of 29 winners and 21 unforced errors to the Spaniard’s 17 and 25.

Kvitova is set to face Angelique Kerber in the semifinals; the German eased past Carla Suárez Navarro 6-2, 6-4 in the day’s first quarterfinal.

“I lost to her in Singapore, unfortunately. I know how dangerous she is,” Kvitova said of the matchup. “She is playing a good game right now as well, but I’m in the semifinal now, I have three matches. I think that can help me with the feeling of the balls and everything. Lefties will be different for sure but I’m used to it.”