Eugenie Bouchard's head injury has not improved enough for her to return to action as the Canadian withdrew from the Wuhan Open in China late Sunday night due to ongoing concussion issues.

The 21-year-old Bouchard had a miserable season until the final Grand Slam of the year at the US Open in early September. Bouchard made it to the Round of 16, but was forced to pull out of the tournament after she fell in the locker room following a mixed-doubles match with Nick Kyrgios. Bouchard suffered a head injury in the fall and hasn't played in a tournament since.

The native of Westmont, Que, also withdrew from the Toray Pan Pacific Open in Tokyo last week.

Bouchard, ranked No. 26 in the world, has gone 12-17 on the season after a terrific campaign in 2014.