Johnson (head) will be a game-time decision for Wednesday's tilt with the Blackhawks, Adrian Dater of the Denver Post reports. There's concern that Johnson might have sustained a concussion Tuesday night against the Coyotes, but the team doesn't seem to be ruling him out from playing just yet. The top-pairing blueliner has put together an effective season for the Avs, racking up 13 points, 25 PIM and 46 hits over 22 contests.