COPA90 examines how the Cascadia rivalry of the Portland Timbers, Seattle Sounders FC and Vancouver Whitecaps FC has grown from a regional to national and international event as well as taking a look at the burgeoning rivalry battle between the New York Red Bulls and New York City FC.

Be sure to tune in to watch the Timbers take on the Sounders Sunday at CenturyLink Field (6:30pm PT, FS1).