Timbers vs Sounders: Portland teases Seattle before 100th meeting - Sports Illustrated
The 15 most memorable games in Timbers-Sounders rivalry history
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Portland Timbers - Wikipedia
Timbers beat Sounders 1-0 in 100th meeting — All Football App
Portland Timbers–Seattle Sounders rivalry - Wikipedia
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Sounders tie record most goals in history of derby in victory vs. Timbers
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Seattle vs. Portland 100
Portland Timbers pick up crucial, emotional home win over rival Seattle Sounders