The Sounders were much the stronger side in the first half and raced out to a lead, before the Dynamo, who went down to 10 men midway through the second half, battled back and earned a draw on the night.
The Sounders took the lead 14 minutes in, as Victor Rodriguez dribbled into the 18-yard box, before setting up Nicolas Lodeiro who scored on an angled shot. Raul Ruidiaz doubled the lead for Seattle four minutes later.
Just after the hour mark, Houston defender Aljaz Struna was sent off for a dangerous clothesline elbow on a Sounders player on the endline.
Juan David Cabezas put the Dynamo on the board in the 70th minute, as he pushed in a header that sailed across the six-yard box.
The Dynamo then completed the comeback in the 80th minute, tying the game as Marlon Hairston set up Ronaldo Pena on the score. The players reversed roles just before the 90th minute, as Hairston scored the go-ahead goal on the counterattack.
- SEA - Nicolas Lodeiro (Victor Rodriguez) 14'
- SEA - Raul Ruidiaz (Brad Smith) 18'
- HOU - Juan David Cabezas 70'
- HOU - Ronaldo Pena (Marlon Hairston) 80'
- HOU - Marlon Hairston (Ronaldo Pena) 88'
Seattle Sounders (1st half): #24 Stefan Frei -- #18 Kelvin Leerdam, #14 Chad Marshall, #20 Kim Kee-hee, #11 Brad Smith -- #7 Cristian Roldan, #4 Gustav Svensson, #13 Jordan Morris, #10 Nicolas Lodeiro, #8 Victor Rodriguez -- #9 Raul Ruidiaz
Seattle Sounders (2nd half): Trey Muse -- Marlon Vargas*, Josh Atencio*, Amr Mokhtar, Draught^ -- Ray Serrano*, Joel Rydtstrand+, Robles*, Azriel Gonzalez*, Alfonso Ocampo-Chavez* -- Diaz*
* - Tacoma Defiance player
# - Guest player
+ - Draft pick
Houston Dynamo (1st half): #23 Joe Willis -- #7 DaMarcus Beasley, #15 Maynor Figueroa, #6 Aljaz Struna, #12 Chris Duvall -- #5 Juan David Cabezas, #10 Tomas Martinez, #22 Matias Vera -- #31 Romell Quioto, #9 Mauro Manotas, #17 Alberth Elis
Houston Dynamo (2nd half): #23 Joe Willis -- #7 DaMarcus Beasley (Adam Lundkvist), #15 Maynor Figueroa (Kevin Garcia), #6 Aljaz Struna (red card 65'), #12 Chris Duvall -- #5 Juan David Cabezas (Boniek Garcia), #10 Tomas Martinez (Tommy McNamara), #22 Matias Vera (Darwin Ceren) -- #31 Romell Quioto (Marlon Hairston), #9 Mauro Manotas (#2 Alejandro Fuenmayor) (Ronaldo Pena), #17 Alberth Elis (Memo Rodriguez)