LAUSANNE, Switzerland -- Fiona Ferro of France booked a spot in her second WTA semifinal of 2019 after easing past former US Open champion Samantha Stosur of Australia, 6-4, 6-2, in the quarterfinals of the Ladies Open Lausanne on Friday.

"I think, today, I played my best match of the week; I had better control of the ball," Ferro said, after her victory. "I think I played pretty solid. My goal was not to let [Stosur] play with her forehand, and I think I did that pretty well."

Ferro had reached the final four at Lugano earlier in the season, also on clay in Switzerland, and sealed another semifinal showing after an 80-minute win over Stosur, who is currently ranked World No.134 after reaching a career-high of No.4 in 2011.

"My first two semifinals on WTA in Switzerland, so, I love this country!" Ferro said with a laugh.

The 98th-ranked Frenchwoman won a whopping 81 percent of points on her first serve during the tilt, and converted four of her nine break points. Stosur was only able to break Ferro once in the mach, and fired four double faults.

Ferro will now face Bernarda Pera of the United States for a spot in the final. Pera moved into her second semifinal of the season after a 6-0, 5-7, 6-3 victory over lucky loser Han Xinyun of China earlier on Friday.

"[Pera] hits the ball very good, forehand and backhand," said Ferro. "She also likes to play on clay, so it’s going to be a great battle, and I’m going to fight for every point and see what I can do."

Ferro fired the first shot of the day as she reached break point at 1-1 with a forehand winner, which Stosur ceded after a double fault. The Australian, however, pulled back level at 3-3, once Ferro dropped serve with back-to-back forehand errors after holding a 40-0 lead in that game.

Stosur’s parity was short-lived, as she quickly fell behind 0-40 in the subsequent game. A forehand winner by the Australian saved the first break point, but she fired an error off of that wing on the second, and Ferro was up a break once more, leading 4-3.

Serving for the set at 5-4, the Frenchwoman eased to triple set point after miscues by her opponent. Stosur saved the first with a backhand crosscourt winner, and Ferro squandered the second with a double fault, but Ferro converted the third by cracking open a rally with a forehand winner.

Ferro fully held the momentum in the second set, deploying a deft dropshot for a winner to break Stosur at love in the first game. Two games later, a solid crosscourt forehand by the French player forced another error from Stosur on the third break point of that game, and Ferro found herself up a double-break at 3-0.

Stosur held her final break point in the next game, but Ferro erased that chance by replying to a dropshot with a drop volley to force an error, and the Frenchwoman maneuvered to a hold for 4-0. Stosur was able to save two match points on her serve before holding for 5-2, but Ferro closed out the win on her third match point after a wide service return by Stosur.