BOSTON (CBS) — After missing two games with a lower body injury, Colin Miller is ready to slide back into the lineup for a depleted Bruins defense in need of NHL-ready players.

Miller participated in an optional skate at the TD Garden on Wednesday ahead of the Bruins’ Game 4 tilt against the Ottawa Senators, who lead their Eastern Conference quarterfinal series 2-1. Both Miller and interim head coach Bruce Cassidy said that the final decision will be made at game time, but Cassidy said that Miller “looks like he’s ready to go.”

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Should Miller re-join the lineup, he will be paired with John-Michael Liles in Game 4. Veteran Providence Bruins defenseman Tommy Cross, who filled in for Game 3 and was on the ice for three of the Sens’ four goals, will be swapped out.

Brandon Carlo (upper-body), Torey Krug (lower-body), and Adam McQuaid (upper-body) all remain day-to-day with no timetable for a return.

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Rookie Charlie McAvoy has averaged 25:34 of ice time as an unexpected call-up to the NHL in the wake of the Bruins’ glut of injuries on the blue line. Joe Morrow joined the lineup in Game 2 and has averaged 21:13 of ice time in the series, after being a healthy scratch since Jan. 22.

Miller won’t get heavy minutes in a pairing with Liles, but at this point, the Bruins defense will take all the help it can get.

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Tune in to 98.5 The Sports Hub for tonight’s Bruins-Senators Game 4 with coverage starting at 7 p.m.!