The Lightning came back from a two-goal deficit, then gave up a two-goal deficit and lost to Ottawa by two goals on Saturday.
Final: Senators 6, Lightning 4
Ryan Dzingel placed a shot perfectly over Andrei Vasilevskiy's shoulder to put Ottawa on top midway through the final period.
It was Ottawa's third goal in 10 minutes.
Brady Tkachuk's goal 50 seconds into the period was really a Lightning own goal. The play devolved in the crease and bounced off Tkachuk's skate, then in an attempt to get the puck away from the goal line, Dan Girardi hit the puck off Vasilevskiy.
Colin White scored at 8:41. Bobby Ryan ripped a shot from center point and White tipped it past Vasilevskiy.
The Senators added one more for good measure as Mark Stone scored a power-play goal with 11.5 seconds left.
Second period: Lightning 4, Senators 2
Victor Hedman is back in the lineup. Which defenseman do you expect to score the go-ahead goal?
Hedman may have scored (and demonstrated just why he makes a Lightning team that wasn't struggling without him that much better), but it was Braydon Coburn who gave Tampa Bay the lead.
Coburn first. He wristed a shot that looked more like a shot-pass (aiming to generate a rebound) from the point that found its way through traffic and past goaltender Craig Anderson to put the Lightning on top midway through the second period.
Hedman tied the game up in the period's opening minute with a power-play goal. Andrei Vasilevskiy sent the puck up to him and Hedman skated through three Senators to beat Anderson five-hole.
Mathieu Joseph added an insurance goal in his first career multi-goal game. He roofed one from the slot with 5:28 left in the period.
First period: Senators 2, Lightning 1
The good news is the Lightning have demonstrated it can dig itself out of a two-goal deficit. The bad news is it has to do it again.
The Lightning came back from down two goals against Ottawa on Sunday and New Jersey before that, but it didn't want to do it against the Senators on Saturday.
That was the point coach Jon Cooper made at morning skate, but it's the position the team finds itself in once again.
The Lightning didn't start poorly, but it was Senators center Matt Duchene who struck. He picked up the puck behind the net and made his way to the right post and tucked the puck under Andrei Vasilevskiy's glove at 4:58.
Less than three minutes later, Bobby Ryan made a nice play to get a shot off as he went to the ice and the Senators were up 2-0.
In keeping of the theme of following Sunday's patterns, Joseph scored shortly there after. The rookie, who scored his first NHL goal against Ottawa on Sunday, now has three goals in four games.