Salah was replaced by Liverpool forward Diogo Jota on 32 minutes after going down off the ball. The Egyptian appeared to receive treatment to his groin before leaving the field.
The 141st FA Cup final was goalless at half-time despite Luis Diaz going close for Liverpool and Christian Pulisic almost scoring for Chelsea.
Former England midfielder Jermaine Jenas said on BBC One: ‘This is a big worry, Mohamed Salah is not the type of player who just takes a seat.
‘He plays a lot of games, a lot of minutes, he’s had a long season – I know most Liverpool players have but chuck the African Cup of Nations into that as well.’
Ex-Chelsea star Karen Carney added: ‘When you see all the team mates around him, that’s when you worry. I think it’s his groin.’
Salah was in tears when an injury forced him off in the 2018 Champions League final and may now be a doubt for this season’s Champions League against Real Madrid on May 28.
Before Jurgen Klopp’s side face the La Liga champions in Paris, they could add another two trophies to February’s EFL Cup success, with Liverpool still challenging Manchester City for the Premier League crown and of course aiming to beat Chelsea today.
More to follow…