Philadelphia Union starting line-up: Zac MacMath; Sheanon Williams, Danny Califf, Carlos Valdes, Porfirio Lopez; Freddy Adu, Brian Carroll, Gabriel Gomez, Michael Farfan; Lionard Pajoy, Josue Martinez

Philadelphia Union bench: Danny Mwanga, Keon Daniel, Cristhian Hernandez, Jack McInerney, Amobi Okugo, Gabriel Farfan, Chase Harrison

Portland Timbers starting line-up: Troy Perkins; Rodney Wallace, Eric Brunner, Andrew Jean-Baptiste, Lovel Palmer; Eric Alexander, Jack Jewsbury, Diego Chara, Kalif Alhassan, Jorge Perlaza, Kris Boyd

Portland Timbers bench: Jake Gleeson, Mike Chabala, Darlington Nagbe, James Marcelin, Ryan Kawulok, Bright Dike, Freddie Braun

Martinez over Mwanga. Adu on the wing again. This is a very strange opening line-up.