How are these numbers calculated?

Big Games

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

Week of 10/10100.0*Supporters Shield100.0*Average seed
FC Dallas 2 Vancouver 0 +11.1
+0.4
Toronto FC 2 NY Red Bulls 1 +9.8
Week of 10/16100.0*Supporters Shield100.0*Average seed
Real Salt Lake 0 FC Dallas 1 +26.6
+0.1
NY Red Bulls 4 Philadelphia 1 -16.3
San Jose 1 Kansas City 0 +0.1
+0.0
Toronto FC 0 Columbus 2 +0.1
Week of 10/25100.0*Supporters Shield100.0*Average seed
Chicago 1 NY Red Bulls 2 -38.2
FC Dallas 2 San Jose 1 +21.1
Points
Chance Will Make Playoffs