On Sunday, they opened the season with a familiar-looking win.
Seattle got two goals from Clint Dempsey, one from Obafemi Martins and a clean sheet from Stefan Frei on its way to a 3-0 win over the New England Revolution at CenturyLink Field before a crowd of 39,782.
The Sounders took control run of play from the start.
In the 24th minute, Dempsey took the ball inside the top of the penalty area, made several moves and went down over the foot of New England midfielder Juan Agudelo. Referee Juan Guzman ruled it a foul, awarding a penalty kick.
Dempsey elected to take the PK himself, an knocked it past goalkeeper Bobby Shuttleworth and into the top right corner.
The Revs almost equalized in the 40th minute, when forward Kelyn Rowe of Federal Way put the ball low and inside the far post, however Frei managed to get a hand on it, sending the ball just wide.
Instead of being even, Seattle increased its lead a minute later as Dempsey sent a pass down to right side to defender Tyrone Mears. Mears sent a cross in front of the goal, where Martins headed it in.
In the 67th minute, Marco Pappa sent a through ball down the middle of the pitch to Martins, who touched the ball off to Dempsey on his left, who touched the ball into a wide-open net.
In the closing seconds, top pick Cristian Roldan made his pro debut.
The Sounders return to action at 7 p.m. Saturday when the San Jose Earthquakes visit.
Final: Sounders open new season with 3-0 win over New England. Two goals from Clint Dempsey, one from Obafemi Martins.
Seconds before the final whistle, rookie Cristian Roldan of UW came on for his pro debut.
Attendance: 39,782. Rare week when it won't lead MLS. Or come close. 62,510 in Orlando today.
67' Goal Sounders. Kinda fun, brilliant goal Sounders. Pappa through ball to open Oba to even opener Dempsey. Sounders, 3-0.Through 50 minutes: If the questions were Evans and Azira and to any degree Mears, the answers so far are fine, fine, very good.
Second half: ... is under way. No changes.
Halftime: Sounders, 2-0. Goals from Dempsey and Martins.
Shots 6-4 NE. Shots on target 2-1 SEA. Corners 5-5. Duels won, 52.9% SEA. Possession 50.6 SEA.
41' GOAL Sounders. Welcome Mr. Tyone Mears who crosses and Oba heads it in. Sounders 2-0. Second assist to Dempsey.
25' GOAL Sounders. Dempsey kits the PK with authority. Sounders 1-0.
24' Dempsey dances through the box and is dumped. PK called.
First kick: ... has been struck. A new season under way. Sounders in their new rave/blue; Revs in navy/white.
Lineup: For Sounders: Frei; Mears. Evans, Marshall, Gonzalez; Neagle Pineda, Azira, Pappa; Dempsey, Martins. Reserves: Perkins, Barrett, Kovar, Remick, Roldan, Rose, Scott.
For Revs: Shuttleworth; Tierney, Goncalves (c), Farrell, Alston; Caldwell, Dorman; Fagundez, Rowe, Bunbury; Agudelo. Reserves: Knighton, Barnes, Woodberry, Kobayashi, Neumann, Davies, Okoli.
Pregame: It is a pretty much perfect day at CenturyLink Field about two hours before the Sounders kick off their 2015 season against the MLS Cup runner-up New England Revolution.
We'll keep the blog open before, during and after the match, and will have more updates and comments on Twitter @donruiztnt.
The game will be shown on Fox Sports 1 and heard on the usual radio outlets.
We'll be back once the lineups are revealed.