Korpisalo made an outstanding glove save on Leon Draisaitl at 15:36 of the second on an Oilers power play to keep the game tied, but Zach Hyman scored on the same power play at 16:16 to give Edmonton a 2-1 lead.
"It was just instincts," Korpisalo said. "I think it was Hyman who got the puck in front of the net and I thought he was going to shoot there, it's a good shooting spot, but he still made that one extra pass and I was just trying to get something in front of it."
McDavid assisted on Hyman's goal to give him an NHL-leading 89 points (40 goals, 49 assists) in 49 games. He has at least one point in 28 of his past 29 games.
"It's always disappointing when you don't get two points, I think we let one slip away there," Ryan said. "Credit to them; they played a good game and took advantage of their opportunities. There are no easy games in the NHL, every game is going to be hard. That being said, I don't think we played our best tonight, I think we maybe overcomplicated things a little bit."