Why Portland Timbers and Seattle Sounders were rivals from Day 1

The Portland Timbers' and Seattle Sounders' rivalry is one of the oldest soccer rivalries in the United States, tracing back to the 1970s. It rages on today through both clubs' recent MLS successes. Let players, coaches, fans and journalists take you on a deep dive into this storied rivalry and why it matters so much for both teams and both cities.