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
Homan 8 Hanna 7 -11.5
-0.8
Hanna 6 Flaxey 4 +10.3
+0.9
Harrison 8 Tippin 5 +0.8
Auld 7 Kean 6 -0.8
Flaxey 8 Morrissey 5 +0.7
Hastings 7 Tippin 6 +0.7
Morrissey 4 Hastings 8 +0.4
Middaugh 4 Harrison 6 +0.4
Kean 3 Homan 8 -0.3
Middaugh 8 Auld 7 +0.3
Thursday, 1/21100.0*Chance in playoffs100.0*Average seed
Hastings 4 Hanna 10 +15.2
+1.0
Hanna 6 Middaugh 5 +15.0
+1.0
Auld 4 Homan 7 +2.0
+0.1
Kean 3 Tippin 7 -1.8
-0.1
Morrissey 5 Harrison 9 -1.5
-0.1
Flaxey 6 Hastings 4 +1.4
Tippin 9 Middaugh 8 -0.9
-0.1
Auld 6 Harrison 5 +0.6
+0.1
Morrissey 4 Kean 7 +0.3
Flaxey 1 Homan 9 +0.2
+0.1
If winner is:HomeAway
Friday, 1/22100.0*Chance in playoffs100.0*Average seed
Hanna vs Kean+22.4-22.4
+0.9-0.9
Hanna vs Morrissey+22.4-22.4
+0.9-0.9
Harrison vs Hastings-8.3+8.3
-0.2+0.2
Harrison vs Flaxey-7.4+7.4
-0.2+0.2
Flaxey vs Auld+4.8-4.8
+0.2-0.2
Tippin vs Morrissey-3.1+3.1
Tippin vs Auld+1.5-1.5
Hastings vs Homan-0.9+0.9
Middaugh vs Homan-0.7+0.7
Middaugh vs Kean+0.7-0.7
+0.1-0.1

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
62-0In524621,218,709,105
51-182.7%541371702,435,122,365
40-210.4292627231301,218,709,690
Total:68.9%1532211576304,872,541,160
Games Above .500
Chance Will Make Playoffs