This article is part of our Fit or Miss series.
Injury news in soccer is notoriously sketchy, so while the below information should be used as a guide, always check the confirmed lineups before every match.
Note: this column is updated as injury news is released.
BC Place Stadium
Wednesday, September 9 at 10:00 p.m. EDT
Vancouver Whitecaps FC
Suspension:Matias Laba, Kendall Waston
Doubtful:Sam Adekugbe (international duty), Andre Lewis (knee), Darren Mattocks (international duty), Ben McKendry (knee), Diego Rodriguez (quad), Russell Teibert (international duty)
Questionable:Pa-Modou Kah (face), Nicolas Mezquida (hamstring)
Colorado Rapids
Suspension:Drew Moor, Axel Sjoberg
Doubtful:Maynor Figueroa (international duty), Joe Greenspan (back), Dillon Serna (international duty), Luis Solignac (hamstring), Jared Watts (undisclosed)
Questionable:Kevin Doyle (international duty)
Providence Park
Wednesday, September 9 at 10:30 p.m. EDT
Portland Timbers
Suspension:Diego Chara, Liam Ridgewell
Out:Ben Zemanski (knee)
Doubtful:Will Johnson (international duty), Alvas Powell (international duty)
Sporting Kansas City
Out:Jalil Anibaba (quad), Roger Espinoza (foot), Ike Opara (Achilles)
Doubtful:Bernardo Anor (ankle), Marcel de Jong (international duty)
Questionable:Soni Mustivar (groin), Chance Myers (hamstring), Krisztian Nemeth (international duty), Amobi Okugo (knee), Erik Palmer-Brown (international duty)
Probable:Matt Besler (international duty)