Estrada scored in the 17th, 51st and 63rd minutes for the Sounders (1-0-0).
His second goal was the eventual game-winner. It was set up when Marc Burch threaded a through-ball to Estrada, allowing him to slot a low shot past Toronto goalkeeper Milos Kocic.
Ryan Johnson got the only goal for Toronto (0-1-0).
2014: The Year in Music [PHOTOS]