Senators defenseman Nick Jensen has undergone surgery for a lower-body injury that troubled him during the latter part of the season, although it remains unclear how long he will be sidelined. Despite the surgery, Jensen had a strong first year in Ottawa, contributing 21 points in 71 games and playing a significant role on the penalty kill. With his availability for the start of the season uncertain, GM Steve Staios may seek external help to cover for Jensen, as the team currently has five blueliners under contract and potential roster openings.