Eugenie Bouchard is suing the United States Tennis Association after she suffered a concussion at the U.S. Open in September.
After playing a mixed doubles match, Bouchard slipped and fell inside the locker room, hitting her head.
She then had to pull out of the tournament. Bouchard was due to face Roberta Vinci in a fourth round siingles match. Vinci would go on to upset Serena Williams and make the final.
Bouchard has only played one match since the U.S. Open, having to retire in Beijing, China against Andrea Petkovic.