Cooper said the difference in the Lightning defense was noticeable in McDonagh's return. He had one assist and one shot on goal in 19:09 of ice time.
"He's a stabilizer back there," Cooper said. "It was nice for him to be back in the lineup and then to play with the lead, because it feels like we haven't played with a lead in some time."
Ross Colton scored at 2:09 of the third period with a one-timer from the low slot for the 5-0 final.
"I just thought we sat back," Buffalo forward Kyle Okposo said. "We just got tight, and I think that's been an uncharacteristic thing for our team in the last month and a half. When we've given up goals, we haven't really sat back and haven't changed the way we played. We just were too hesitant in the first period."
NOTES:Tampa Bay has not lost five in a row since March 2-10, 2014. … It was Elliott's first shutout since Feb. 21, 2021, also against the Sabres while playing for the Philadelphia Flyers. Five of his 43 NHL shutouts have been against Buffalo. … Kucherov, who was plus-3, has scored in four of the past five games and has 12 points (four goals, eight assists) in the past eight. … Buffalo forward Cody Eakin was a late scratch because of an undisclosed injury. ... Defenseman Owen Power, the No. 1 pick in the 2021 NHL Draft by the Sabres, participated in the morning skate and will make his debut Tuesday at the Toronto Maple Leafs. … Buffalo defenseman Mattias Samuelsson was minus-4 in 21:28.