| 25 | ALFARO, Tony | D |
| Athletic left-sided defender who started just one game this season. |
| 6 | ALONSO, Osvaldo | M |
| An elite defensive midfielder who covers the whole field and completes almost all of his passes. |
| 39 | ANDERSON, Oalex | F |
| Raw, speedy forward who played just 334 minutes this season. |
| 2 | DEMPSEY, Clint | F |
| One of the best American soccer players of all-time but is sitting out due to health issues. |
| 3 | EVANS, Brad | D/M |
| One of most versatile players in MLS who could come in anywhere in defense or the midfield. |
| 12 | FARFAN, Michael | M |
| Technical central midfielder with a good engine on both sides of the ball. Has appeared in just one game this season. |
| 21 | FERNANDEZ, Alvaro | M |
| Crafty and cerebral Uruguayan who can line up just about anywhere in midfield, but is most at home in an attacking role. |
| 91 | FISHER, Oniel | D |
| Speedy Jamaican fullback who's given Seattle valuable minutes off the bench. |
| 24 | FREI, Stefan | GK |
| Veteran 'keeper is one of the best in the league at playing angles and staying big off his line. |
| 8 | FRIBERG, Erik | M |
| Elegant Swedish midfielder is a true No. 8 whose strength is his ability to complete simple passes and find good spots off the ball. |
| 9 | GOMEZ, Herculez | F |
| Former US international who can line up anywhere in the front three, and is known for his savvy and willingness to battle. |
| 23 | IVANSCHITZ, Andreas | M |
| Austrian import with a sweet left foot who hits arguably the best restarts in the league, but struggles with pace. |
| 17 | JONES, Darwin | M |
| Seattle Homegrown has spent most of his brief MLS minutes on the wing, which is the best use of his blistering pace. |
| 33 | JONES, Joevin | D |
| Trinidad & Tobago left back whose ability on the overlap makes him one of the best attacking fullbacks in the league. |
| 11 | KOVAR, Aaron | M |
| Sounders Homegrown who has played on either flank, and a little bit in central midfield. |
| 10 | LODEIRO, Nicolas | M |
| Star playmaker whose first touch, final ball, goal-scoring instincts and all-around workrate make him one of the league's best players. |
| 31 | LOWE, Damion | D |
| Giant center back who hasn't managed to break through with the MLS team, and spent this past season on loan.. |
| 22 | LYON, Charlie | GK |
| Third-string goalkeeper who has gotten run for S2 in USL over the past two seasons. |
| 80 | MANSARAY, Victor | F |
| US U-20 forward whose natural talent draws the eye but whose motor and tactical nous are works in progress. |
| 14 | MARSHALL, Chad | D |
| The only three-time Defender of the Year in MLS history, Marshall has been a rock in the back for Seattle since his 2014 arrival. |
| 4 | MEARS, Tyrone | D |
| Tireless two-way English right back who's suited up for the likes of West Ham and Bolton before arriving in Seattle in 2015. |
| 1 | MILLER, Tyler | GK |
| Young backup goalkeeper who made his MLS debut earlier this season. |
| 13 | MORRIS, Jordan | F |
| Homegrown attacker who's split time between center forward and the wing, and has had arguably the best rookie season in MLS history. |
| 5 | OCKFORD, Jimmy | D |
| Rugged and athletic central defender who has spent the vast majority of his Sounders career on loan. |
| 15 | REMICK, Dylan | D |
| Pacy left back who can get forward, but has been slowed by injuries in 2016. |
| 7 | ROLDAN, Cristian | M |
| Second-year central midfielder with a heady, no-frills, efficient game on both sides of the ball. |
| 20 | SCOTT, Zach | D |
| Mr. Sounder, Scott's a slightly undersized, all-effort central defender who's been with the team since 2002 and is retiring after the game. |
| 18 | STURGIS, Nathan | M |
| Journeyman midfielder and defender who has yet to see the field for Seattle in 2016. |
| 29 | TORRES, Roman | D |
| Hulking Panamanian international center back whose return to health in August was a huge factor in Seattle's late-season run. |
| 16 | VALDEZ, Nelson | F |
| Paraguayan international workhorse who struggled in the regular season, but who's been an essential part of Seattle's playoff success. |