How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Wednesday, 1/20100.0*Chance in playoffs100.0*Average seed
Morrissey 4 Hastings 8 +12.8
+0.9
Hastings 7 Tippin 6 +12.8
+0.9
Auld 7 Kean 6 -0.8
Flaxey 8 Morrissey 5 +0.7
Middaugh 4 Harrison 6 +0.7
Kean 3 Homan 8 -0.4
Homan 8 Hanna 7 -0.4
Hanna 6 Flaxey 4 -0.3
Harrison 8 Tippin 5 +0.3
Thursday, 1/21100.0*Chance in playoffs100.0*Average seed
Hastings 4 Hanna 10 -19.8
-1.0
Flaxey 6 Hastings 4 -15.2
-0.8
Tippin 9 Middaugh 8 +2.2
+0.1
Auld 4 Homan 7 +2.1
+0.1
Morrissey 4 Kean 7 +1.2
+0.1
Kean 3 Tippin 7 -1.0
-0.1
Auld 6 Harrison 5 -0.9
-0.1
Hanna 6 Middaugh 5 +0.9
Morrissey 5 Harrison 9 -0.9
Flaxey 1 Homan 9 +0.2
If winner is:HomeAway
Friday, 1/22100.0*Chance in playoffs100.0*Average seed
Harrison vs Hastings-17.7+17.7
-1.1+1.1
Hastings vs Homan+15.1-15.1
+0.8-0.8
Middaugh vs Kean-5.0+5.0
-0.2+0.2
Middaugh vs Homan-4.6+4.6
-0.2+0.2
Tippin vs Auld-3.8+3.8
-0.2+0.2
Tippin vs Morrissey-3.8+3.8
-0.1+0.1
Flaxey vs Auld+2.9-2.9
-0.2+0.2
Hanna vs Morrissey-2.3+2.3
Hanna vs Kean-2.3+2.3
Harrison vs Flaxey+0.3-0.3
+0.1-0.1

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
52-065.6%3204225821,218,739,410
41-14.10415254113202,435,123,252
30-2Out226402661,218,678,498
Total:18.4%151214152716824,872,541,160
Games Above .500
Chance Will Make Playoffs