How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Chance in playoffs100.0*Average seed
Darryl 88 Stephen 61 +19.9
+1.5
Zach 77 Bill 36 -1.5
-0.1
Jason 61 Yarroch 63 +0.3
+0.0
Babs 60 Brandon 105 -0.3
Jake 61 Kyle 24 -0.3
Josh 73 Chris 57 +0.2
Week of 11/26100.0*Chance in playoffs100.0*Average seed
Darryl 62 Bill 55 +23.7
+1.4
Brandon 60 Zach 45 +1.5
+0.2
Babs 65 Stephen 50 +0.7
Kyle 55 Jason 50 +0.7
+0.0
Jake 75 Chris 32 -0.6
-0.1
Josh 60 Yarroch 48 -0.2
+0.0
If winner is:HomeHome OTTieAway OTAway
Week of 12/3100.0*Chance in playoffs100.0*Average seed
Darryl vs Zach+0.7+0.3-0.5-0.5-0.7
Kyle vs Yarroch+0.3+0.0-0.0-0.1-0.3
Jake vs Josh+0.2+0.3-0.2-0.2-0.2
Brandon vs Stephen-0.2-0.2-0.2+0.2+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs123456789101112Count
161-0-0In14433679,451,193
150-0-1In5149287,694
140-1-0In29719,456,609
Total:In721333919,195,496
Games Above .500
Chance Will Make Playoffs