Just ahead of the midpoint of the first, Taylor Hall scored his first goal as a Sabre on a Buffalo power play to knot the game at 1-1. Less than two minutes later, Oshie answered back on a Washington man advantage, tucking the rebound of an Ovechkin wrister behind Buffalo goalie Carter Hutton to put the Caps back on top at 10:33.
In the front half of the middle frame, Backstrom and Oshie combined to spark a second transition tally at 5-on-5, springing john Carlson into Buffalo ice with enough time and space to pick a corner and pot it for a 3-1 Washington lead at 7:05 of the frame. Minutes later, the Caps had a power play opportunity but were unable to extend their lead. No matter, though. They did so on the next offensive zone face-off.
Lars Eller won the draw, and Conor Sheary helped the puck back to Dillon at the right point. Dillon threaded a seeing eye shot through traffic, and it got past Hutton for a 4-1 Caps advantage at 13:23 of the second.
Washington got a little cute in the remaining minutes of the second, getting pass happy and trying to make some fancy plays rather than putting pucks on net. For the first time in the game, they iced the puck with just under four minutes left, ending a stretch of remarkable precision with their exit passes. Neither team iced the puck at all in the first period.
The Caps rarely spent extended time in their own end but did get hemmed on such a shift late in the frame, and the Sabres took advantage, making it 4-2 at 18:46 of the second on a Tobias Rieder goal.
When Buffalo blueliner Jake McCabe scored from the top of the right circle just 20 seconds into the third, the Caps' lead was suddenly down to a single goal. But less than half a minute later, Jakub Vrana collected an uncharacteristic Eric Staal turnover right in front of Hutton, burying it for 5-3 Washington lead.
With Hutton pulled for an extra attacker, Buffalo again closed to within a goal with just under two minutes remaining when Victor Olofsson converted a Hall feed from the back door. Garnet Hathaway's long-distance empty-netter removed any doubt, accounting for the 6-4 final.