The Detroit Lions are already down their starting quarterback in Matthew Stafford. Now, they are down their primary backup.

Per Michael David Smith of Pro Football Talk, the Lions placed Jeff Driskel on the injured reserve list on Saturday due to a hamstring issue, ending his season.

Driskel took over for Stafford, who has been dealing with a back injury, back in Week 10 and made three starts for Detroit, throwing for 685 yards, four touchdowns and four interceptions while completing 59 percent of his passes and posting a passer rating of 75.3.

In his most recent outing in Week 12, Driskel sustained a hamstring injury, one that kept him out of the Lions’ Thanksgiving Day loss to the Chicago Bears.

David Blough started in his place and will be the probable starter moving forward.

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Driskel signed with Detroit back in September after being waived by the Cincinnati Bengals.

The 26-year-old, who played his collegiate football at both the University of Florida and Louisiana Tech, was originally selected by the San Francisco 49ers in the sixth round (207th pick overall) of the 2016 NFL Draft.

However, he never actually played a regular-season game for the 49ers before being released just before the start of the 2016 campaign. He then linked up with the Bengals, where he resided through 2018 and made nine appearances and five starts, with all of those outings coming during the 2018 season.

In his short time under center in Cincinnati, Driskel threw for 1,003 yards, six touchdowns and a couple of picks while completing 59.7 percent of his passes and registering a passer rating of 82.2.

The Lions are 3-8-1 on the season.