COLORADO RAPIDS (7-9-1; 22 POINTS)AT SOUNDERS FC (7-5-6; 27 POINTS)8 p.m., CenturyLink Field.TV: NBCSN. RADIO: 97.3 FM.CLUB LEADERS: For Colorado: G 5, Jamie Castrillon; A 6, Martin Rivero; S 36 Tony Cascio; SOG 14, Cascio; GAA 1.29, Matt Pickens . For Seattle: G 7, Eddie Johnson; A 4, Fredy Montero and Mauro Rosales; S 72, Montero; SOG 26 Montero; GAA 1.22, Bryan Meredith.HEAD TO HEAD: Seattle leads the all-time series, 5-1-1, and 4-0 at home. This season, the Sounders won the April 14 meeting, 1-0, and will visit Colorado on July 28. NOTES: Seattle is fourth in the Western Conference, Colorado is fifth. … The Sounders are on a club-record nine-game winless streak. The Rapids are 3-5-1 over the same period and have lost three of their last four. ... Seattle is 5-3-1 at home; the Rapids are 2-6 away. … A league-high 13 players have contributed to Colorado’s 24 goals this season. … Colorado defender Tyrone Marshall spent the 2009 and ‘10 seasons with Seattle. … Sounders midfielder Steve Zakuani (leg) is listed as questionable. Zakuani hasn’t played since suffering leg fracture on a reckless tackle by Rapids midfielder Brian Mullan in Colorado on April 22, 2011. … … Rapids forwards Conor Casey (hamstring) and Omar Cummings (ankle) are listed as probable. … Seattle’s Fredy Montero and Colorado’s Jeff Larentowicz are one caution away from yellow-card suspension. … The referee is Kevin Stott.QUOTABLE: “They went now back into a 4-4-2, where they’ve been playing a 4-3-3 or a 4-5-1, whatever you want to call it. How comfortable are they in that new formation? We’ll have to see. But they’re a team with two dangerous forwards, and they’re a team that definitely likes to possess the ball now out of the back.” – Sounders coach Sigi Schmid on the Rapids.NEXT: The Sounders return to U.S. Open Cup at 7 p.m. Wednesday, facing Chivas USA in a semifinal match at Starfire Sports Stadium. Their next MLS match is 1 p.m. July 15 at New York.