Updated 11:20 p.m. ET
Lions QB Matthew Stafford re-injured his right shoulder in Sunday's overtime loss to the Jets. Head coach Jim Schwartz said after the game that Stafford is "very sore."
Stafford, in his second game back since separating his right shoulder in the season opener, left the game in the fourth quarter when he landed on the shoulder after scrambling.
Drew Stanton replaced Stafford in the game, where the Lions blew a 10-point lead in the overtime loss. Stafford threw two TDs and ran for another before the injury.
Backup QB Shaun Hill is still sidelined after suffering a broken arm against the Giants in Week Six.
ESPN's Chris Mortensen reported Sunday night that Stafford will undero an MRI on Monday morning.
The way we see it
The Lions had a golden opportunity of pulling an upset win over the Jets, and losing Stafford went hand-in-hand with blowing the lead. Things had started to come together for the offense with Stafford back and healthy, so if he has to miss more time it would be a blow to the Lions. Detroit plays the Bills in Week 10.
Stafford and Calvin Johnson owners should keep an eye on his status this week. Going up against the Bills' defense, both players could have big games, but Stanton playing diminishes Johnson's value.