Iga Swiatek stretches winning streak to 30 with easy win at French Open

Make that 30 in a row for Iga Swiatek.

The top-ranked Swiatek routed Alison Riske 6-0, 6-2 on Thursday to reach the third round of the French Open and extend the longest winning streak in women's tennis since Serena Williams won 34 in a row in 2013. The 20-year-old Polish player hasn't lost in more than three months.

The 2020 French Open champion compiled a 23-6 edge in winners over her 43rd-ranked American opponent.

Two-time major finalist Karolina Pliskova lost 6-2, 6-2 in the second round to French wild-card entry Leolia Jeanjean, who was making her debut in any Grand Slam tournament.

"Even me, I don't have an explanation. I don't even realize what's happening,'' Jeanjean said. "It's my first Grand Slam. I thought I would have lost in the first round in two sets -- and I found myself beating a top-10 player. So, honestly, I have nothing else to say. I don't really know how it's possible.''

Pliskova's loss combined with Danielle Collins falling 6-4, 6-3 to Shelby Rogers means that seven of the top 10 women in the seedings at the French Open are gone before the second round is completed.

No. 8 Pliskova and No. 9 Collins join No. 2 Barbora Krejcikova, No. 4 Maria Sakkari, No. 5 Anett Kontaveit, No. 6 Ons Jabeur and No. 10 Garbine Muguruza on the way out.

It leaves just three top-10 seeds -- No. 1 Swiatek, No. 3 Paula Badosa and No. 7 Aryna Sabalenka -- in the third round. It's the first time in the Open era that so few top-10 seeds have remained by the round of 32 at Roland Garros, breaking the previous record of five set in 2001 and 2021. It's also the fewest top-10 seeds in a third round at any major since the 2015 US Open.

"I could feel like, 'Wow, this is good, because they are losing,'" Badosa said. "But in this case, I'm more like, 'OK, pay attention, because anything can happen. You saw it today.''

As Swiatek, Badosa and Sabalenka are all on the same side of the draw, No. 14 Belinda Bencic is the highest-seeded player remaining on the bottom half.

Pliskova has been ranked No. 1 and was the runner-up at Wimbledon last year and at the US Open in 2016. She also has reached the semifinals at the other two major tournaments, including the 2017 French Open.

Jeanjean is a 26-year-old from Montpellier who is ranked 227th in the world. She trailed 2-1 at the start Thursday before winning nine consecutive games to take the opening set and grab a 4-0 lead in the second. Pliskova made 28 unforced errors and was broken in half of her eight service games.

The wild-card entry played college tennis at Baylor, then Arkansas, then Lynn University in Boca Raton, Florida, while pursuing her studies in finance. A year ago at this time, she was ranked outside the top 800 and winning hundreds of dollars at low-level International Tennis Federation events. No matter what happens in her next match, she'll leave Paris with at least $135,000.

Badosa went down a break to open the third set of her match against 68th-ranked Kaja Juvan before regrouping to grab four games in a row and record a 7-5, 3-6, 6-2 victory at Court Suzanne Lenglen that took more than two hours.

Badosa's best showing at a Grand Slam tournament was a quarterfinal appearance at the 2021 French Open. She will face No. 29 Veronika Kudermetova next.

Sabalenka needed just 62 minutes to beat Madison Brengle 6-1, 6-3 and advance to the third round at Roland Garros for the third straight year.

In addition to Rogers, Americans Jessica Pegula and Madison Keys also advanced to the third round. Pegula defeated Anhelina Kalinina 6-1, 5-7, 6-4, and Keys topped Caroline Garcia 6-4, 7-6 (3).

Keys, the 2017 US Open runner-up, relied on her dominant serve to get past her French opponent on Court Philippe Chatrier.

The 22nd-seeded Keys will next face 16th-seeded Elena Rybakina, the only woman with more aces than Keys this season.

Keys, who is making her 10th appearance at the French Open, at one point got her necklace stuck in her hair, so chair umpire Jaume Campistol helped her untangle it.

Simona Halep was knocked out in the second round when Chinese teenager Qinwen Zheng pulled off the 2-6, 6-2, 6-1 upset at Court Simonne-Mathieu.

Halep, the 2018 French Open champion, later revealed to reporters she had experienced a panic attack during the match.

"I didn't know how to handle it, because I don't have it often," Halep said. "Yeah, I don't really know why it happened, because I was leading the match. I was playing well. But [it] just happened, and as I said, I lost it. I couldn't focus."

Halep said she was unsure what caused it, but was feeling better and otherwise physically fine after the match.

The 74th-ranked Zheng amassed 27 winners to Halep's nine to earn a trip to the third round in her French Open debut.

The 19th-seeded Halep was looking for her 21st win of the season. The 2019 Wimbledon champion had beaten Zheng in Melbourne in January.

France's Alize Cornet beat 2017 champion Jelena Ostapenko, the No. 13 seed, 6-0, 1-6, 6-3 in the final match of the day to advance to the third round. Ostapenko made 48 unforced errors to just five for Cornet, who reached her first Grand Slam quarterfinal this year at the Australian Open.

ESPN's D'Arcy Maine and The Associated Press contributed to this report.