How are these numbers calculated?

Big Games

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

Week of 10/27100.0*Chance in playoffs100.0*Average seed
Greg 60 Burns 105 -0.8
-0.3
Spencer 108 Cooper 87 -0.3
+0.1
Milvia 60 Brandon 63 +0.3
Kemahl 84 Avery 119 +0.3
+0.1
Diblasi 97 Andino 81 -0.1
If winner is:HomeTieAway
Week of 11/3100.0*Chance in playoffs100.0*Average seed
Cooper vs Greg-1.7+0.7+5.3
-0.3+0.1+1.0
Brandon vs Spencer+2.7+0.4-0.5
+0.2+0.0-0.0
Avery vs Diblasi+1.4-0.7-1.6
+0.2-0.1-0.2
Burns vs Kemahl+1.2-0.8-1.5
+0.2-0.1-0.2
Ali vs Milvia+0.8-0.8-1.1

What If

Chances based on how well the Greg finish out the regular season.   Explain

Games Above .500
Chance Will Make Playoffs