Doughty suffered an apparent concussion Wednesday against the
visiting Carolina Hurricanes and left the game in the first period. An
NHL player is ineligible to return from injured reserve within seven
days, leaving Doughty unavailable for Wednesday's game at Chicago and
doubtful for Thursday's at Dallas.
The Kings are only calling Doughty's ailment an upper-body injury.
The Kings had returned Muzzin to their AHL affiliate in Manchester
on Saturday to make room for defenseman Matt Greene, who had been
sidelined since undergoing shoulder surgery in July. By not putting
Doughty on IR at that time, the Kings left open the possibility that
he could return for the Chicago game, but he has not made enough
progress in his recuperation.
In order to receive medical clearance, the NHL requires concussed
players to have two consecutive symptom-free days and then pass a
Doughty, who will turn 21 next month, was a finalist last season for
the Norris Trophy, which is awarded to the league's top defenseman. In
five games this season, he had one point and two penalty minutes.