Here's the Sounders schedule:
Santos Laguna at Seattle Sounders – Wednesday, March 7 – 7pm PTSeattle Sounders at Santos Laguna – Wednesday, March 14 – 5 pm PT
The club says ticket information will be announced soon.
And here's the release from CONCACAF:
The Confederation of North, Central American and Caribbean Association Football (CONCACAF) announced today the quarterfinal schedule for the 2011/12 CONCACAF Champions League. The Championship Round opens with defending champion Monterrey going on the road to face Mexican rival Morelia on Tuesday, March 6.
Toronto FC will be home against the LA Galaxy in the first leg of their all-Major League Soccer knockout round match on Wednesday, March 7, with the USA's Seattle Sounders hosting Santos of Mexico later that same evening.
The first leg ends on Thursday, March 8, when Mexico's Pumas travels to El Salvador for a meeting with Isidro Metapan.
Second-leg action starts on Tuesday, March 13, with Monterrey taking on Morelia at home, followed the next day by Santos-Seattle and LA Galaxy-Toronto FC. Pumas will close quarterfinal play on March 15 by welcoming Isidro Metapan to Mexico City.
The quarterfinal winners will advance to the semifinals March 27-29 and April 3-5, with the two-leg final set for April 17-19 and April 24-26.
The winner of the 2011/12 CONCACAF Champions League will earn a berth to the 2012 FIFA Club World Cup.
CONCACAF CHAMPIONS LEAGUEAll Times U.S. Eastern (local times in parentheses)First LegTuesday, March 6, 2012Morelia (MEX) vs. Monterrey (MEX), 10 p.m. (9 p.m.)
Wednesday, March 7, 2012Toronto FC (CAN) vs. LA Galaxy (USA), 8 p.m. (8 p.m.)Seattle Sounders (USA) vs. Santos (MEX), 10 p.m. (7 p.m.)Thursday, March 8, 2012Isidro Metapan (SLV) vs. Pumas (MEX), 8 p.m. (7 p.m.)
Second LegTuesday, March 13, 2012Monterrey (MEX) vs. Morelia (MEX), 10 p.m. (8 p.m.)
Wednesday, March 14, 2012Santos (MEX) vs. Seattle Sounders (USA), 8 p.m. (6 p.m.)LA Galaxy (USA) vs. Toronto FC (CAN), 10 p.m. (7 p.m.)
Thursday, March 15, 2012Pumas (MEX) vs. Isidro Metapan (SLV), 10 p.m. (8 p.m.)
SemifinalsFirst LegMarch 27-29, 2012LA Galaxy-Toronto FC winner vs. Santos-Seattle Sounders winnerMonterrey-Morelia winner vs. Pumas-Isidro Metapan winner
Second LegApril 3-5, 2012Santos-Seattle Sounders winner vs. LA Galaxy-Toronto FC winnerPumas-Isidro Metapan winner vs. Monterrey-Morelia winner
FinalsFirst LegApril 17-19, 2012Monterrey-Morelia/Pumas-Metapan winner vs. LA Galaxy-Toronto FC/Santos-Seattle Sounders winner
Second LegApril 24-26, 2012LA Galaxy-Toronto FC/Santos-Seattle Sounders winner vs. Monterrey-Morelia/Pumas-Metapan winner
About CONCACAFCONCACAF “The Confederation of North, Central American and Caribbean Association Football” is one of six continental confederations of FIFA (Fédération Internationale de Football Association) and serves as the governing body of football in this part of the world. It is composed of 40 national associations, from Canada in the north to Guyana, Surinam and French Guyana in the south.