Martinez was placed on injured reserve Thursday due to a right groin injury.
Martinez had already been ruled out for Thursday's home opener against the Sharks due to what was initially described as a lower-body injury, and he'll be sidelined for at least a week after being evaluated by the team's training staff. Nolan Allan will take Martinez's place in the third pairing alongside Connor Murphy on Thursday, while Isaak Phillips was recalled from AHL Rockford in a corresponding move.