After a strong shorthanded rush from Curtis Lazar, who took the puck hard to the net and tried to stuff a chance by Detroit goalie Thomas Greiss, Reilly followed with a ferocious charge to the crease and whacked home the rebound to put Boston ahead by three goals midway through the third period.
"I think Mike is a good offense player," said Cassidy. "He needs to get moving more, become more of a factor with the puck. He's good at it. But it requires work, and you've got to move. The shorty was just instinctual. That's not coaching; that's just him being a good hockey player and a smart player getting up the ice.
"Great play by [Tomas] Nosek, first of all, to recognize he had time. Lazar goes to the net, so it's just guys making a good hockey play on that one, but he was moving a little better tonight. Got up the ice on the last goal, and we need a little more of that out of him. Pick your spots, but be clean, be efficient, and be part of the five-man attack."
Reilly's tally came just 24 seconds after Detroit cut the Bruins' lead to 3-1 with a 5-on-3 marker at 7:46 of the third, effectively ending any chances of a Red Wings comeback. Charlie McAvoy started the sequence by rubbing Lucas Raymond into the end boards to force a turnover behind the Bruins net.
Nosek was there to pick up the loose puck and proceeded to fire a dart of an outlet pass to Lazar through the neutral zone creating a shorthanded break that Reilly read to perfection.
"I think it was just instincts, I think they got a couple guys that stuck low and it kind of looked like they were pretty stuck," said Reilly, who matched Patrice Bergeron with a team-high five shots on goal. "I think I was a little above them and I believe Nosek made the pass there. Obviously, a heads up play, and I think they were just a little bit out of position and we just blew the zone.
"It wasn't a risky play to blow the zone. It was a pretty clear pass but great play to start it from Nosek and obviously Lazar is a fast guy. It was a good play all around."
