A goal from forward Dominique Badji in the 88th minute gave the Colorado Rapids a draw 1-1 against New York City FC.
Before Saturday's game, Cooke's audition for the Rapids' head coaching position had not gone well.
In the first post-Hurricane Harvey MLS match in Houston, the Colorado Rapids would earn their first road victory of the season.
With the win, RSL keeps the Rocky Mountain Cup for the second consecutive year.
The Swedish midfielder tallied his first-ever MLS goal, but it was too little, too late after Portland jumped ahead with a pair of early goals.
Amid front office and roster changes, interim GM Padraig Smith is laying out his vision for success in Commerce City.
The Colorado Rapids lost 1-0 to D.C. United on Saturday, but the beginnings of what the organization has coined "The Rapids Way" began to take shape.
A breakdown on a back pass from Jared Watts to Tim Howard was the only scoring in Saturday's contest at Dick's Sporting Goods Park.
With the dismissal of Pablo Mastroeni from his duties on Tuesday, the days of former players leading the teams in Denver has come to a close.
Amid a disappointing 2017 season, the Colorado Rapids have fired head coach Pablo Mastroeni.