The Sounders start as close to a regular lineup as possible given the circumstances, though the Sigi Schmid's decision to start Zach Scott over Pat Ianni is something of a surprise, likely motivated by the danger posed by DC United in the counter-attacking phase and Scott's peerless man-marking abilities.
The big surprise where DCU is concerned is Joe Willis appearing in goal over US International Bill Hamid; that's something the Sounders are likely to look to exploit.
Seattle Sounders XI:
Kasey Keller; James Riley, Jeff Parke, Zach Scott, Tyson Wahl; Mauro Rosales, Brad Evans, Osvaldo Alonso, Alvaro Fernandez; Mike Fucito, Fredy Montero
Seattle Sounders Bench:
Josh Ford, Leo Gonzalez, Patrick Ianni, Nate Jaqua, Lamar Neagle, Pat Noonan, Amadou Sanyang
DC United XI:
Joe Willis; Brandon McDonald, Ethan White, Daniel Woolard; Perry Kitchen, Austin Da Luz, Andy Najar, Clyde Simms, Dwayne De Rosario, Charlie Davies, Joseph Ngwenya
DC United Bench:
Bill Hamid, Blake Brettschneider, Marc Burch, Stephen King, Kurt Morsink, Santino Quaranta, Josh Wolff