"It's a strong sign, especially now at the end of the season," Backstrom said. "We know he [Ovechkin] is a key to our team and he scores a lot of goals. We have shown that we can play, that our other key players can, play, too."
Ovechkin, the two-time MVP and the league's leading scorer this season, got a game misconduct in the first period for knocking Chicago's Brian Campbell into the boards.
"There's nothing I can do right now. He just fell and this happens," Ovechkin said.
They lost 3-2 in Philadelphia on Saturday, giving up two goals in the final two minutes, including the game winner with two seconds to go.
Down 3-0 in the third Sunday without their top player and with Niemi playing well, the Capitals dominated play.
Brooks Laich scored on a power play at 5:29 to make it 3-1. A couple of seconds after the Caps' 5-on-3 power play had elapsed, Backstrom converted a rebound at 7:32. Thirteen seconds later, Eric Fehr scored from just outside the crease, tying the game, silencing the crowd at the United Center and forcing Chicago to take a timeout.
The Capitals had an 11-1 shots-on-goal advantage in the third period.
Ovechkin raced up the ice and from behind drove Campbell into the boards with 7:44 left in the first period.
Campbell stayed down for several minutes before he was able to leave the ice with a trainer at his side and then headed to the locker room. He did not return to the game. He has an upper-body injury and will not make the Blackhawks upcoming road trip to the West Coast.
Ovechkin went to the penalty box after being assessed a five-minute boarding penalty and then into the locker room after being given a game misconduct.
"I don't think it was a real good check. He just kind of fell and it was a dangerous moment. It was not a hard hit. I just wanted to push him," Ovechkin, the two-time MVP, added.
"I didn't hit him hard. I pushed him, but he fell bad. It probably looks bad. I thought it was going to be two minutes, but the linesman came to me and said 'Game over.' "
Ovechkin was given two game misconducts earlier this season, the first for a shoulder check and the second one for a kneeing incident that eventually led to a two-game suspension.
"The league will do what they do," Chicago coach Joel Quenneville. "Soupy [Campbell] is going to be out for a bit here. It was a dangerous hit."
Blackhawks defenseman Niklas Hjalmarsson would like to see Ovechkin penalized.
"I hope they take a good look and suspend him for a couple of games," he said.
The Blackhawks were able to capitalize on the penalty after Ovechkin's hit. They had a 5-on-3 power play after a second penalty on Alexander Semin, who crashed into Niemi at the end of a breakaway.
Toews scored for the second time in the first period, poking in a rebound from in front after a shot from Patrick Sharp. That made it 2-0.
Madden scored on a redirect on a long pass from Duncan Keith to make it 3-0 in the second.
"We've got the most skill in the league, on any team," Toews said. "There's no reason, up 3-0, we can't go out and finish the team off."
With the teams playing 4-on-4, Toews took a nice crossing pass from Hjalmarsson for the first score seven minutes into the game.
- Blackhawks RW Marian Hossa, who scored his 20th goal and had his 20th assist in Saturday's loss at Philadelphia, was scratched with an upper-body injury.
- The Capitals reached 100 points in their 69th game. Backstrom also had an assist, giving him at least 55 in each of his first three seasons.