Seattle got the benefit of an own goal from Portland to take the lead when Mamadou Danso stepped in front of a cross intended for Montero in the 25th minute. Portland originally was charged with a second own-goal, this one by Jack Jewsbury, to give Seattle a 3-0 lead. But that goal was later changed and given to Montero with persistence likely the reason Montero earned his career-best 13th goal of the season. Montero was originally stopped twice by Portland goalkeeper Donovan Ricketts and appeared to barely get his toe on the ball at the same moment Jewsbury got to it.
The result was the same, though; a three-goal lead in a match Seattle mostly dominated.
"It was 10 minutes that created the result," Portland coach Gavin Wilkinson said. "Take 10 minutes out of the first half when we were absolutely horrendous defensively and didn't manage the game well at all and we were scrambling. We started to create some decent movement and created decent chances, but I think we handed it to them."
While two Seattle goals at least had the Timbers help, there was nothing but skill on Johnson's finish. Johnson made a quick cut to the middle of the penalty area where he was waiting for a long pass from Evans. The pass was on target and Johnson took the short-hop and guided it past Ricketts with his left foot.
"All over the field, they beat us to a lot of balls, they beat us to ball in our own box and scored," Portland defender David Horst said. "You're not going to win games like that. I think we were very surprised with the result."
Johnson, who tweeted on Friday night he had received a call-up to the U.S. national team, ran over near a section of Portland supporters holding a finger over his lips while the remaining 65,000-plus fans erupted in celebration.
Johnson said after the game he couldn't comment on his Twitter message. The U.S. is scheduled to announce its roster for upcoming World Cup qualifiers on Monday.
"I'm all for this rivalry thing now," Johnson said. "I couldn't wait to play."