Will Borgen pushed it to 5-1 at 1:18 of the third period, and Oliver Bjorkstrand scored from a sharp angle along the right boards to make it 6-1 at 11:01.
"I think we had a good pace, we had good pressure, we did a lot of good things," Tourigny said. "We were generating good scoring chances, quality chances in the first two [periods], but then in the third they started scoring right away and it was tough."
Geekie made it 7-1 at 18:05, kicking a rebound to his stick and scoring with a backhand on a power play.
Donato scored glove side on a 2-on-1 from the right circle at 19:33 for the 8-1 final.
"Those two points were huge," Soucy said. "I think we did a good job of keeping our foot on the gas and closing it out. When it was tight there for a bit, we did a good job of focusing on what we needed to do to just kind of wear them down."
NOTES: Sprong has 42 points (20 goals, 22 assists) in 60 games this season. He had 40 points (27 goals, 13 assists) in 105 games in his previous two seasons combined. … The Coyotes' next game is also in Seattle on Thursday. They have been outscored 20-5 in their past three games and are 20-for-33 on the penalty kill (60.6 percent) in their past seven.