MELBOURNE, AUSTRALIA - APRIL 14: Jason Johannisen of the Bulldogs runs with the ball during the round four AFL match between the North Melbourne Kangaroos and the Western Bulldogs at Etihad Stadium on April 14, 2017 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)

Jason Johannisen’s preseason has been derailed by an ankle injury, according to the Herald Sun.  

The 2016 Norm Smith Medalist suffered a knock to his ankle at training on Friday.

The injury could prevent Johannisen from partaking in the Bulldogs opening JLT Community Series match against Gold Coast on March 3.