How are these numbers calculated?

Big Games

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

Week of 4/6100.0*Chance in playoffs100.0*Average seed
Denver 23 SFGG 29 -6.6
-0.5
Glendale 49 OPSB 39 +0.6
-0.0
Week of 4/13100.0*Chance in playoffs100.0*Average seed
OPSB 39 Denver 14 -65.9
-1.0
SFGG 43 Glendale 10 +4.0
+0.0
Week of 4/20None
Games Above .500
Chance Will Make Playoffs