OTTAWA - Mike Fisher scored 3:17 into overtime and the Ottawa Senators extended Tampa Bay's losing streak to a season-high seven games by beating the Lightning 4-3 on Saturday night.
Fisher put a shot from the left side past Johan Holmqvist for his 15th goal, giving Ottawa its second straight win following consecutive losses to Washington.
Dany Heatley scored his 25th goal 4:26 into the third period to get the Senators even at 3-3.
The Lightning are 0-5-2 since defeating Toronto at home on Dec. 20.
Holmqvist's clearing attempt behind the net struck teammate Jason Ward's discarded stick in the left corner. Ottawa's Jason Spezza recovered the puck and sent a centring pass to Heatley, who beat Holmqvist with a wrist shot from the slot.
Randy Robitaille scored twice for the Senators, who won 5-3 in Buffalo on Friday.
Ray Emery made his second straight start and stopped 16 shots.
Vincent Lecavalier and Martin St. Louis each had a goal and an assist to stake Tampa Bay to a 2-0 lead midway through the first.
St. Louis opened the scoring with his 16th goal 5:43 in before Lecavalier netted his team-leading 28th goal after making a sensational stickhandling play.
Lecavalier, who leads the NHL with 62 points, received defenceman Paul Ranger's pass behind him and pushed the puck forward between his legs. He then put a backhand past Emery at 11:17.
Holmqvist made 23 saves, and Jan Hlavac also scored for Tampa Bay, which hasn't won a road game in regulation since Nov. 10.
The Lightning are a league-worst 3-14-2 on the road.
Robitaille began Ottawa's comeback with 38.2 seconds remaining in the first when he beat Holmqvist to cut the lead to 2-1.
Hlavac made it 3-1 with his sixth of the season 3:38 into the second, but Robitaille cut the Senators' deficit to 3-2 with his second of the game and sixth overall at 16:07.
Notes: Holmqvist started for the second time in eight games. He is 0-4-2 in his last six appearances ... With the Senators reaching the midway point of the regular season, Heatley is on pace for his third straight 50-goal season. He has scored 50 goals in each of his first two seasons with Ottawa, reaching the mark in the final regular-season game both times.