KC is in control of it's own destiny in the East, but does need a little bit of help in the Supporters' Shield race to control their destiny. They can get that help tonight in Seattle.
Vancouver at Seattle
What we want to happen - Vancouver win
Vancouver is fighting for their playoff lives at this point, while Seattle is fighting for the Supporters' Shield. The Sounders are the only team between KC and controlling their own destiny so a Vancouver win would put it in KC's hands.
Colorado at San Jose
What we want to happen - San Jose win
This would keep Colorado from catching up to KC on points, with all the other teams in front of them, it's unlikely that Colorado would get into the Supporters' Shield race, but this would drop them back.