Washington swept back-to-back games after winning 5-2 against New Jersey on Saturday.
"We're still in a learning process," Ovechkin said. "It's very important for us to have a very good start and play the same way all 60 minutes. [On Saturday], we had the best start of the year (with three goals in the first period) and then we stopped playing and gave them a chance to breathe, but a win is a win."
Mikhail Maltsev and Yegor Sharangovich each scored, and Mackenzie Blackwood made 20 saves for the Devils (7-8-2), who are 1-5-0 in their past six games.
"The results aren't there for us right now but we're going to try to continue to grow as a team, as individuals, and I think right now that's the outlook you have to have," New Jersey forward Kyle Palmieri said. "We're trying to build our game into something that we're going to give ourselves a chance to win."