San Francisco 49ers running back Raheem Mostert suffered a broken arm in Thursday's 34-3 win over the Oakland Raiders at Levi's Stadium, coach Kyle Shanahan confirmed to reporters.
Mostert, 26, went down on an gruesome play in the third quarter that saw his arm bend in the wrong direction. Multiple players took a knee while Mostert was being tended to by trainers, who put his arm in a brace as he was taken off the field.
This article will be updated to provide more information on this story as it becomes available.