How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 10/13100.0*Average seed
Vancouver 1 Sporting KC 4 -0.2
Orlando 1 Seattle 2 -0.1
DC United 1 FC Dallas 0 +0.1
Week of 10/21100.0*Average seed
LAFC 2 Vancouver 2 -0.3
Houston 2 Seattle 3 -0.3
FC Dallas 0 Sporting KC 3 +0.1
Week of 10/28100.0*Average seed
Sporting KC 2 LAFC 1 -0.7
Colorado 2 FC Dallas 1 +0.5
Seattle 2 San Jose 1 -0.2
Vancouver 2 Portland 1 +0.1
Points
Chance Will Make Playoffs