Mayo GAA have confirmed that Jason Doherty will play no part in Saturday's All-Ireland semi-final with Dublin and that the forward’s season is over due to injury.
The Burrishoole man went down in a heap during the second half of last Saturday’s win over Donegal and it was immediately obvious that he was in serious trouble.
Scans have confirmed that he has suffered an anterior cruciate ligament injury and will be sidelined for several months.
In a statement, Mayo GAA said: "It's very disappointing for Jason to have suffered this injury and he will now begin work on his recovery.
"Everybody within Mayo GAA wishes him well during his rehabilitation and we look forward to seeing him wearing the green and red in 2020."
Mayo have been hard hit with injuries this year, with players like Diarmuid O’Connor, Cillian O’Connor, Séamus O’Shea, Tom Parsons and Matthew Ruane all sidelined for significant chunks of the season.
Cillian O'Connor and O’Shea both featured against Donegal, Parsons was on the bench and there are hopes that captain Diarmuid O’Connor and Ruane might be fit to play some part against the Dubs.
However, this is offset by the loss of Doherty, who has been in great form this season. He has given his team a ball-winning option in the half-forward line, he carries well in possession and can kick a score.