Erik Karlsson had a goal and two assists to help the Senators snap a six-game losing streak. Karlsson, the top-scoring defenceman in the NHL with 68 points, opened the scoring 3:57 into the game with his career-high 20th goal.
Lehner finished with 35 saves. Bishop had 29.
Despite the loss, Tampa Bay has earned a point in nine consecutive games (5-0-4) for the first time since its 2003-04 championship season.
Notes: Stamkos played in his 400th NHL game. ... Ottawa RW Bobby Ryan (lower body) sat out for the first time this season. He was replaced by Mark Stone, who was recalled from AHL affiliate Binghamton. ... Lightning C Valtteri Filppula has four goals and nine assists during a nine-game points streak. ... Tampa Bay has scored on the power play five games in a row. ... The Lightning have scored three or more goals in nine consecutive games. The Senators have allowed that many in 10 straight. ... The U.S. Air Force Thunderbirds were in attendance.