How are these numbers calculated?

Big Games

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

Week of 8/6100.0*Chance in playoffs100.0*Relegated100.0*Average seed
Bradford 3 OSU 1 +12.4
No
+0.4
Orillia 2 OSS 2 +2.6
+0.1
Alliston 1 EG Rangers 4 -1.9
OSS 0 Collingwood 8 -0.0
Week of 8/13100.0*Chance in playoffs100.0*Relegated100.0*Average seed
Collingwood 5 Bradford 0 -10.0
-0.3
Alliston 2 OSU 1 -8.0
-0.1
Orillia 3 Alliston 3 +4.1
+0.1
Orillia 2 EG Rangers 3 +2.3
+0.2
EG Rangers 5 OSS 1 -1.9
-0.1
OSU 2 Orillia 2 +1.3
+0.0
Week of 8/20100.0*Chance in playoffs100.0*Relegated100.0*Average seed
OSU 1 Bradford 0 Out
-0.4
Bradford 2 EG Rangers 4 -0.5
OSS 1 Orillia 1 +0.1
Points
Chance Will Make Playoffs