Ovechkin brought Washington within 2-1 at 12:04 when he one-timed Jakob Chychrun’s pass in the left face-off circle.
DeBrincat scored his second of the period at 12:35 to put Detroit ahead 3-1.
“We obviously got off to a great start,” Kane said. “We knew it was a big shift after they made it 2-1 and we came right back to make it 3-1. That puts momentum right back on our side.”
Lucas Raymond made it 4-1 at 14:18, getting to a rebound and lifting the puck in from the slot.
“In my opinion, it is a three-goal league,” McLellan said. “If you win the race to three, you have a really good chance of winning. Toronto got to it in the first period against us the other day. Tonight, we got there in the first period.”
Capitals coach Spencer Carbery felt the game got away from his team in the moments after Ovechkin’s goal.
“We weren’t sharp, we make some mistakes and it is 2-0,” he said. “OK, it’s 2-1. Take a deep breath, let’s get a few even shifts under our belt. Then we throw a puck away in the offensive zone, transition and the next thing you know, it is in the back of our net.”
Dowd cut it to 4-2 at 10:27 of the third period, tapping in a loose puck.
NOTES: Ovechkin’s goal was his 25th against Detroit. He has scored 25 or more against 16 franchises. … Kane is the fourth active player to reach 1,300 points (477 goals, 823 assists), joining Sidney Crosby (1,636), Ovechkin (1,577) and Evgeni Malkin (1,326). He is also the second United States-born player to hit the mark, joining Mike Modano (1,374).