A week of exceptional promise is awaiting Seattle Sounders FC as the push for Champions League advancement and clinching an MLS Cup Playoff berth are at hand.


With a win over Costa Rica's CS Herediano at home on Tuesday night the Group D leading Rave Green could clinch a place in the CONCACAF Champions League quarterfinals, if Monterrey drops points against Comunicaciones. Fox Soccer will nationally televise the match from the Xbox Pitch at CenturyLink Field at 7 p.m. PT.


On Saturday night in Vancouver Sounders FC can secure both their place in the MLS postseason, plus a place on their mantle for the Cascadia Cup with a victory over Whitecaps FC. The match at Empire Field begins at 7:30 p.m. PT and will be broadcast live on KONG 6/16 and THIS-TV.


Seattle enters round four of the Champions League group stage with the only perfect record (3-0-0, 9 points) among the 16 teams after having beaten Herediano, 2-1, in Alajuela last week. A win combined with a Monterrey draw or loss versus Comunicaciones will send Sounders FC through. The Mexican and Guatemalan sides play Tuesday at 5 p.m. PT.


The Rave Green's journey of some 9,000 miles will begin with the relatively short bus ride to British Columbia for the weekend. They can clinch a playoff berth with a win or draw. Second in the Supporters' Shield sweepstakes, Seattle (14-6-9, 51 points) seeks a fifth consecutive road win across all competitions as Vancouver (4-14-10, 22 points) plays its final match at Empire.


After their 3-0 home thumping of D.C. United last week Sounders FC have gone 10-2-4 in their last 16 MLS matches and 17-3-4 in all competitions since May 28. One of the few teams to take points during that run was Vancouver with a 2-2 draw at Seattle on June 11 thanks to a late wonder strike from Swiss forward Eric Hassli. That was the first meeting between Seattle and Vancouver at the MLS level after 122 between the cities' top representatives from 1974-2008.


Whitecaps FC are 4-3-5 and have won their last two at home. They have recently found firmer footing, winning two and drawing once in the last six MLS outings. Vancouver moves to its permanent home, the renovated BC Place stadium downtown on October 2, hosting Portland in the final Cascadia fixture of 2011.


From Vancouver, Sounders FC fly to Texas and then on to Guatemala for their fifth-round Champions League date on September 27 against Comunicaciones. Their next MLS match is October 1 at New England. A four-match home stand begins October 4 with the Lamar Hunt U.S. Open Cup final.