"We need to take a look in the mirror, starting with myself, and give more of a passionate performance," Tampa Bay captain Steven Stamkos said from his locker room stall after the game. "We can't just go out there and expect to win."
Ahead, Three Things we learned from a disheartening performance coming out of the break by the Bolts.
1. EARLY GOALS DOOM BOLTS
Tampa Bay was all set to come out of its five-day-off bye week fresh and energized, ready to tackle the second half of the season with the same vigor they started 2017-18.
Those positive vibes lasted for all of 56 seconds.
On the game's opening shift, Vegas' Deryk Engelland sent an innocuous-looking shot at the net from just inside the blue line past Lightning goaltender Andrei Vasilevskiy, replay showing James Neal getting a tip on the shot to give him a goal in six of his last seven games versus Tampa Bay.
Less than a minute into the game, the Lightning found themselves chasing, and they were never really able to recover.
"Again, we're behind the eight ball to start games, which has been a trend as of late," Stamkos said. "It's too hard of a league to play from behind all the time. I'll take responsibility to come out and play a lot better, to kind of lead the way. Our line didn't have it tonight."
Later in the game, with the Bolts still clinging to life down 3-1 to start the third, William Karlsson shut the door, scoring 18 seconds into the final period for an insurance goal Vegas ultimately wouldn't need.
"It shows that we have a lot to work on and it starts with how hard we work and how smart we work and just the commitment on doing all those details," Lightning defenseman Anton Stralman said. "What makes us successful is when we play simple. We play simple hockey, skate hard, work hard and we out work teams. It's not like we're way more skilled than the other teams. It's the work that puts us in those positions and that's where we need to be more consistent."
2. BANG-BANG SEQUENCE SPOILS COMEBACK
After getting on the board midway through the second period to cut its deficit to 2-1, Tampa Bay continued to apply pressure on the Vegas goal and built off the momentum of finally breaking through.
The Lightning must have thought they tied the game up with a couple minutes to go in the second, Steven Stamkos leading a rush into the offensive zone and lacing a cross-ice pass on the back post for Kucherov, who saw his scoring chance denied miraculously by a sprawling Marc-Andre Fleury making a fantastic right leg save.
Seconds later, Vegas was headed back the other way, David Perron carrying the puck into the zone, making a move in the right circle to elude a Bolt and freeing himself for an open shot in the slot, which he sent over the blocker of Vasilevskiy to push the Golden Knights' lead back to two goals.
"That's the swing," Cooper said. "We score, full of life and things might be better for us. But we didn't."
And therein lies the answer: The Golden Knights were opportunistic, capitalizing on their chances.
The Lightning couldn't.
The result? A 4-1 loss for the Bolts.
3. REVAMPED POWER-PLAY UNITS PAY DIVIDENDS
The lone bright spot for the Lightning was the general success of their power-play units, which saw a switch in personnel following the break.
During Wednesday's practice session and again on Thursday, the Bolts went with a revamped top unit where Brayden Point and Ondrej Palat joined Stamkos, Nikita Kucherov and Mikhail Sergachev, filling in for the injured Victor Hedman.