This is not what the Arizona Cardinals were hoping to learn after veteran running back Chris Johnson left during Sunday's win over the San Francisco 49ers.
On Monday, NFL insider Jay Glazer reported Johnson's MRI results revealed some bad news.
Tough blow for Cardinals @ChrisJohnson28 has fractured tibia, out extended period of time but team still gathering how long this shelves him
— Jay Glazer (@JayGlazer) November 30, 2015
Johnson, 30, has never missed an NFL game due to injury. The Cards signed Johnson to a one-year contract in August to help bolster a running game that was dead last in the NFL last season in yards per carry.
Johnson did just that by averaging 4.8 yards per rush in his first eight games with the Cards, but he had struggled in his three most recent games, notching just 138 yards on 55 attempts (2.5 yards per carry).
Backup running back Andre Ellington may also be out of action for a while, as Cards coach Bruce Arians revealed Monday that the third-year pro is dealing with a turf toe injury.
If Ellington is out, rookie running back David Johnson will likely start Sunday's game at the St. Louis Rams.