49ers RBs Christian McCaffrey, Jordan Mason placed on IR
(Photo credit: Tina MacIntyre-Yee/Democrat and Chronicle / USA TODAY NETWORK via Imagn Images)
San Francisco 49ers running back Christian McCaffrey and top backup Jordan Mason are being placed on injured reserve.
McCaffrey left the snowy field in Buffalo on Sunday night after a 5-yard gain that was preceded by him heading to the sideline in apparent pain at the end of an 18-yard run.McCaffrey was diagnosed with a posteri