How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Friday100.0*Chance in playoffs100.0*Average seed
BRA 3 NOT 6 +21.1
+0.2
Saturday100.0*Chance in playoffs100.0*Average seed
GUI 3 BRA 1 +29.4
+0.3
MAN 4 COV 7 +24.7
+0.2
SundayNone
Points
Chance Will Make Playoffs