Koskinen was making his first start since a 6-3 loss to the San Jose Sharks on Feb. 6.
"[Koskinen] made huge saves at some huge times," Edmonton defenseman Darnell Nurse said. "Obviously both our goaltenders (Mike Smith) each and every night, it seems like when they're asked to step up, they step up, and [Koskinen] was huge for us tonight."
Larsson scored at 15:14 of the first period with a slap shot from the point to give Edmonton a 1-0 lead. It was his first goal since Feb. 19, 2019, when he scored against the Arizona Coyotes.
"It was really good, really good," Oilers coach Dave Tippett said. "Nice to see. He was all smiles, said that's his one for the year and he's all done."
Draisaitl made it 2-0 13 seconds into the third period. He has four goals and five assists in the past four games. Huberdeau made it 2-1 at 8:45.