Diane Parry took down Barbora Krejcikova in three sets. (Robert Prange/Getty Images)

The upsets continued in the first round of the French Open as French teenager Diane Parry ousted No. 2 seed and reigning Roland Garros champion Barbora Krejcikova. The 1-6, 6-2, 6-3 win for Parry is her first over a player ranked in the top 50.

Krejcikova is the third top-10 player out in the first round following No. 6 Ons Jabeur and No. 10 Garbine Muguruza. Naomi Osaka also is out after a tough first-round matchup against Amanda Anisimova.

Krejcikova started out the match against Parry with a double fault before rattling off 15 straight points to take a 6-1, 2-0 lead.

The world No. 2 was playing in her first match in over three months, as she had been dealing with a right elbow injury since the Qatar Open in February. She’s one of just three defending champions to have lost in the first round one year after winning the title.

The 19-year-old Parry entered the day 1-5 in career Grand Slam matches, ranked 97th in the world.

“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.

“It’s never easy to start on this kind of court against the defending champion. You can get a bit tight, which happened in the first set. But then I managed to relax.”

While top-seeded Iga Swiatek took care of business 6-2, 6-0, other top names didn’t fare so well. Victoria Azarenka took down Ana Bogdan after mounting a comeback in three sets, 6-7 (9-7), 7-6 (7-1), 6-2. Bianca Andreescu also had to mount a comeback, taking down Ysaline Bonaventure 3-6, 7-5, 6-0.