How are these numbers calculated?

Big Games

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

Week of 10/13None
Week of 10/21100.0*Win MLS Cup100.0*Average seed
DC United 3 NYCFC 1 -1.2
-0.3
Philadelphia 0 NY Red Bulls 1 +0.9
+0.1
Orlando 2 Columbus 1 +0.1
+0.0
Week of 10/28100.0*Win MLS Cup100.0*Average seed
NYCFC 3 Philadelphia 1 +2.3
+0.5
Chicago 0 DC United 0 +0.1
Points
Chance Will Make Playoffs