From there, things went downhill for Tampa Bay.
Nick Foligno made it 2-1 with a power-play goal 5:07 into the second period and just 31 seconds later, Charlie Coyle scored again for Boston to increase the lead to 3-1. The Bruins added a fourth goal with 4:52 left in the second to take a 4-1 lead into the second intermission. It marked the first time all season that the Lightning allowed three goals against in a single period.
"I felt like, in the first, we strung a really good period together," said Pat Maroon. "I thought we could have got out of that period, but they tie it up, even though they had four shots.
"I thought we had the momentum and then we tried to just change our game for some reason and turned pucks over. Then we took some penalties again. That kills our momentum.
"Five-on-five, I thought we were very strong tonight. When you take too many penalties and then you turn pucks over into their transition, you're eventually going to get caught and that's what happened."
We've heard it time and time again throughout Cooper's tenure as head coach, it's hard to come back in this league. It's even harder to come back from a three-goal deficit with 20 minutes to play against a team that was 11-0-0 when leading after two periods this season.
The Bolts just dug themselves too big of a hole heading into the third period trailing by three. But you have to give them credit for playing until the final whistle. In fact, you could easily argue that Tampa Bay was the better team in two of the three periods on Monday. They continue to look strong at five-on-five, which is a great sign for the team moving forward.
David Pastrnak opened the third period scoring with a power-play goal 3:51 into the final frame, but the Lightning answered right back with Rudolfs Balcers getting his first goal as a member of the Bolts in just his second game with the team. Maroon picked up the lone helper when the two combined for a really well-executed give-and-go.
Tampa Bay continued to play hard and made it 5-3 when Paul scored on the power play for his second goal of the night and eighth of the season with 9:22 left. Victor Hedman had the primary assist and Maroon notched his second assist of the period with the secondary helper.
But it was just too little, too late for the Bolts, who dropped the first of four matchups this season against the Bruins 5-3.
"I loved the first," said Cooper. "We were coming out and I thought we dictated play. We had our chances. We did everything we wanted to do.