It’s easy to forget that the Seattle Sounders have dominated the Portland Timbers. The human mind is such that events closer to the present day are given prominence in our headspace. Those four straight wins by Portland hurt, because those wins dropped the series to essentially level at 18-19-7, +2 in the MLS era. But over the decades from 1975, when the Timbers started a year after Seattle, the history is in Seattle’s favor — 65–57–15 (WLD).
Toss in the trophies and the Sounders are ahead. They hold 7 Cascadia Cups to Portland’s five, which includes the two years when the Sounders didn’t compete for it.