In the seven games since the NHL trade deadline, vet­eran center Jason Arnott has been a valuable addition to the Capitals, contributing five points and quickly stepping into the role of locker room leader.

Now that Arnott has joined the ranks of ailing Capitals — he is listed as week-to-week with an undisclosed injury — we have to ask: Which player do the Capitals need back in the lineup the most?

The other injured players are defenseman Mike Green (day-to-day, concussion); center Nicklas Backstrom (day-to-day, fractured thumb); goalie Semyon Varlamov (day-to-day, knee); and defenseman Tom Poti (week-to-week, groin).