After a month of inactivity — and little sign of progress — the Chiefs placed guard Ben Grubbs on injured reserve Wednesday.
Grubbs last played in the Chiefs’ 23-13 win over Pittsburgh on Oct. 25.
“We’ve gone four or five weeks here with rehabilitation (and) he hasn’t improved,” head athletic trainer Rick Burkholder said. “He’s going to need at least another month to come back from this.”
The Chiefs have won all four games they’ve played without Grubbs, as Jeff Allen — a 14-game starter in 2013 — has assumed his starting spot. Allen, however, suffered an ankle injury in the Chiefs’ 30-22 win over the Bills on Sunday and did not practice Wednesday, though he finished the game.