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
Alliston 1 EG Rangers 4 +17.8
+0.6
Orillia 2 OSS 2 +2.0
+0.1
Bradford 3 OSU 1 -1.9
+0.1
OSS 0 Collingwood 8 No
Week of 8/13100.0*Chance in playoffs100.0*Relegated100.0*Average seed
EG Rangers 5 OSS 1 +5.3
+0.3
Orillia 2 EG Rangers 3 In
+0.3
Collingwood 5 Bradford 0 +0.7
+0.0
Orillia 3 Alliston 3 +0.5
+0.1
OSU 2 Orillia 2 +0.2
+0.1
Alliston 2 OSU 1 +0.0
Week of 8/20100.0*Chance in playoffs100.0*Relegated100.0*Average seed
Bradford 2 EG Rangers 4 +0.8
EG Rangers 1 Alliston 4 -0.3
Points
Chance Will Make Playoffs