Guice sprained his left knee at LSU last season, but missed only one game.
On Guice's sixth carry of the night, he was tackled from behind and stayed on the ground. He limped to the sidelines and was removed from the game.
The news is also a significant blow to Guice - and the latest knee injury to slow down his football career. An MRI showed much worse - a torn ACL. A year ago at LSU, Guice was hampered by a hyperextended knee, limiting his snaps and forcing him to miss a game.
Like many 41-year-olds, Tom Brady is dealing with a sore back.
"Grabbing him in the second round was obviously a great treat for us, but character was never a concern", coach Jay Gruden said recently, pointing to injuries and the quality of running backs as reasons for Guice falling in the draft.
Kelley, a 6-foot, 229-pound thumper of a back enjoyed quite the coming-out party as an undrafted rookie free agent in 2016. He finished with six carries for 19 yards in his debut.
In 2017, Washington was bit pretty hard by the injury bug. But there are other running backs, such as Ronnie Brown and Edgerrin James, who were never the same after the injury. Basically they'll have a running downs back and a passing downs back.