The Western Bulldogs have confirmed that Jason Johannisen has suffered a high-grade hamstring strain, now expected to be sidelined for at least two months.

Johannisen was substituted from the Bulldogs' win over Adelaide in the third term with a hamstring concern, with the club now confirming the extent of the injury.

The 30-year-old has played nine games for the Dogs so far this season, averaging 19.1 disposals per match. The club confirmed through head of sports medicine, Chris Bell, that Johannisen won't need surgery for his latest hamstring setback, but will miss 8-10 games.

“Unfortunately, our great win against the Crows was soured by a hamstring injury to JJ in the third quarter,” Bell said.

“Being an over-stretching injury whilst at speed, our clinical suspicions of a high-grade injury were confirmed with the MRI that showed extensive damage.

“JJ is the ultimate professional and will get to work with our rehab team to get back playing this home and away season, but we anticipate that he will miss 8-10 games.”

In better news for the Dogs, Josh Bruce is available for selection after being sidelined with a rib injury in Round 5, while Adam Treloar is close to a return from a hamstring injury.

The Bulldogs will next face Gold Coast in Round 11, before matches to come against Geelong, Port Adelaide and North Melbourne.