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
Matt 66 Ali 79 -0.7
-0.4
Kemahl 84 Avery 119 +0.2
Milvia 60 Brandon 63 +0.2
-0.1
Diblasi 97 Andino 81 -0.2
+0.1
Spencer 108 Cooper 87 -0.2
Greg 60 Burns 105 +0.1
If winner is:HomeTieAway
Week of 11/3100.0*Chance in playoffs100.0*Average seed
Andino vs Matt-0.4-0.2+0.4
Brandon vs Spencer-0.1-0.1+0.1

What If

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

Games Above .500
Chance Will Make Playoffs