Eugenie Bouchard has been forced to withdraw from the both the women's and mixed doubles after sustaining a head injury in a locker-room fall at the US Open, and doubts remain over her future in the singles competition.

Bouchard was competing alongside defending doubles champion Elena Vesnina in the women's event, while partnering Nick Kyrgios in the mixed, successfully reaching the second round in both.

However, the Canadian slipped following her matches on Friday, with medics urging her not to play on Saturday.

"Eugenie Bouchard is withdrawing from both the women's doubles and mixed doubles competition at the 2015 US Open," read a statement from tournament director David Brewer.

"Following the competition yesterday evening, Ms Bouchard slipped and fell in the locker room and sustained a head injury.

"The severity of the injury was and continues to be assessed by the onsite medical personnel at the US Open.

"The medical staff has recommended that Ms Bouchard withdraw from today's competitions, and Ms Bouchard is following that advice.

"No determination about competing in the singles competition has been made at this time.

"Ms Bouchard will continue with medical evaluation and treatment for the remainder of the day.

"An update on her condition will be provided later today."

Bouchard is due to face Roberta Vinci in the fourth round of the women's singles on Sunday.