Smith suffered a torn anterior cruciate ligament after wrenching his right knee in a second-quarter sack.
New York Jets quarterback Geno Smith suffered a season-ending knee injury in his comeback game against the Baltimore Ravens, multiple US media outlets reported Monday.
Smith, who returned to the Jets line-up on Sunday in his first start since 2014, suffered a torn anterior cruciate ligament after wrenching his right knee in a second-quarter sack.
The quarterback had completed four out of eight passes for 95 yards and a touchdown before he left the game.
"Something just felt funny when I got up," Smith said of the injury on Sunday, which allowed Ryan Fitzpatrick to come off the bench to guide the Jets to a 24-16 win and end a four-game losing streak.
Smith, 26, has been a polarizing figure for Jets fans in recent years. In 2015 he missed most of the season after suffering a broken jaw after a fracas with team-mate Ikemefuna Enemkpali.
New York Jets legend Joe Namath criticized Smith on Sunday after he failed to return to the game following his knee injury.
"If you've got a right knee injury keeping you out of the game why are you standing on the sideline the entire 2nd half? How bad can it be?," Namath wrote on Twitter.
Smith later responded to Namath's barb, writing: "Somebody tell Joe that the doctors have the final say on whether you can or cannot get back into the game...... and also that I love him!"