Two-time Wimbledon champion Petra Kvitova has pulled out of the French Open ahead of her first-round match because of an injured left forearm.

The No. 6-seeded Kvitova tweeted Monday that she has been dealing with pain for a few weeks.

An MRI on Sunday night confirmed a Grade 2 tear, which she said "could get a lot worse" if she played.

She had been due to face Sorana Cirstea on Court Suzanne Lenglen.

Kvitova was replaced in the draw by Kaja Juvan, an 18-year-old from Slovenia who lost in qualifying and will be making her Grand Slam debut.

Play has started at Roland Garros on Day 2 of the clay-court Grand Slam tournament.