San Francisco 49ers running back Raheem Mostert's season is over following an arm injury suffered in the team's Thursday night blowout of the Oakland Raiders.
Mostert will be forced to undergo season-ending surgery, and it's an unfortunate end to a promising debut season for the rookie.
This season, Mostert amassed 261 rushing yards, 25 receiving yards, and a touchdown.
Source: Matt Maiocco