Draughn's teammate Carlos Hyde suffered a concussion in the first half of Friday's preseason loss to Green Bay, CSN Bay Area reports.
Draughn actually missed the game with a minor back/rib injury, despite going through warmups in uniform, Matt Barrows of The Sacramento Bee reports. Even after missing the past two preseason games, Draughn seems to have a strong hold on the No. 2 running back job, as Mike Davis and DuJuan Harris have failed to impress. Draughn may also replace Hyde on passing downs, which means he could have a three-down role if Hyde were to miss time with an injury. For what it's worth, Hyde doesn't have any confirmed concussions on his NFL track record.