The Sounders Women at the US National Women (but I repeat myself) are in action today. The more famous half of the roster is playing with their national team cohorts against China in a friendly. There's a livestream on the ussoccer.com site.
Meanwhile, the more college-oriented half of the roster is kicking off the first match of the regular season against rival Whitecaps FC in Vancouver. For coverage of that you'll probably have to check in with @SoundersWomen on twitter (or @WhitecapsFC as a fallback).