PARIS -- Barbora Krejcikova arrived at the French Open as the defending champion in singles and doubles. She also was coming off a three-month absence from the WTA Tour because of an injured right elbow, so even her own expectations were modest.
Krejcikova was right to be apprehensive -- and on Monday, she became only the third woman in the professional era to exit in the first round at Roland Garros a year after earning the trophy.
The second-seeded Krejcikova got off to a terrific start before everything fell apart in a 1-6, 6-2, 6-3 loss to Diane Parry, a 19-year-old from France who is ranked 97th and entered the day with a 1-5 career record in Grand Slam matches. Parry received raucous backing from spectators shouting for her at Court Philippe Chatrier, where the noise echoed under the retractable roof pulled shut because of rain.
"It's a dream for me. It was always a dream to play on this court, with the French crowd to support me. They clearly pushed me to victory today,'' Parry said. "I'm the happiest person right now.''
Also Monday, four-time Grand Slam champion Naomi Osaka lost her opening match to Amanda Anisimova 7-5, 6-4. Anisimova, a 20-year-old American who reached the French Open semifinals in 2019, also beat Osaka in the third round at the Australian Open in January.
Top-seeded Iga Swiatek, meanwhile, extended her winning streak to 29 matches by advancing to the second round. The Polish player, who won the French Open title in 2020, beat Lesia Tsurenko 6-2, 6-0 in the first round on Court Philippe Chatrier. Swiatek's winning streak is the longest by any woman since Serena Williams won 34 in a row in 2013. She has won the title at her past five tournaments.
US Open champion Emma Raducanu's French Open debut was as difficult as can be for more than a set before she emerged with a 6-7 (4), 7-5, 6-1 victory over Czech qualifier Linda Noskova. The 12th-seeded Raducanu trailed by a set, then was down a break in the second set twice, before coming back to win in more than 2½ hours against a player who was trying to pull off the sort of upset Raducanu did over and over again at Flushing Meadows last year.
Former Grand Slam champions Petra Kvitova beat Anna Bondar 7-6 (0), 6-1, and Victoria Azarenka defeated Ana Bogdan 6-7 (7), 7-6 (1), 6-2. Kvitova won the Wimbledon title twice and reached the semifinals at the French Open twice, the last time two years ago. Azarenka is a two-time Australian Open champion who reached the semifinals at Roland Garros in 2013.
This was Krejcikova's first match since February, and the rust showed.
The only other women to lose in the first round a year after winning the title at Roland Garros were Anastasia Myskina in 2005 and Jelena Ostapenko in 2018 -- both of whom, like Krejcikova, had been surprising champions.
Since the professional era began in 1968, Krejcikova is just the seventh reigning women's champion to be bounced in the first round of a Grand Slam tournament.
Against Parry, Krejcikova double-faulted on the match's very first point, then looked every bit someone ready to display her best tennis. The next 15 points in a row went Krejcikova's way as she raced to a 4-0 lead.
"It's never easy to start on this kind of court against the defending champion,'' Parry said. "You can get a bit tight, which happened in the first set. But then I managed to relax.''
After Krejcikova wrapped up that opening set, things turned around as Parry played more confidently. Krejcikova's mistakes mounted: By the end, she had accumulated 45 unforced errors, 19 in the third set alone. Parry finished with 26 in all.
The Associated Press contributed to this report.