The match at CenturyLink Field marked the final home game for the former Tottenham and Fulham goalkeeper and his teammates came up with the goods by scoring two late goals to record a brilliant 2-1 win.
Earlier in the piece, Keller had done his bit for the team with some crucial saves and although Schmid was unsure if it was his one of his best performances for the club, he was full of praise for the 41-year old veteran.
"Shoot, there's so many. I mean, obviously that game he played for the national team against Brazil that night in L.A. was one that ranks up there as one of the best all-time for any goalkeeper," Schmid said.
"But he's played so many outstanding games for the Sounders that you sort of, as a coach, sometimes you almost go, 'OK, it's expected,' but you can't ever become complacent. You can't ever expect it. Big goalkeepers make saves at crucial points of the game and they don't give up generally soft goals and that's what Kasey does.
"He makes saves at important junctures of the game to keep us in it and that keeps us in the game. He was able to do that for us tonight and he's done that numerous times."