How are these numbers calculated?

Big Games

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

Monday, 4/9100.0*Chance in playoffs100.0*Average seed
RS 6 OS 17 +18.4
+0.8
SAL 16 OS 8 -13.7
-0.6
SPA 21 BF 10 +6.0
+0.2
JPP 16 BF 13 +5.9
+0.1
RS 14 SAL 25 +2.1
JPP 13 SPA 21 +0.4
+0.1
Tuesday, 4/10100.0*Chance in playoffs100.0*Average seed
RS 11 MEL 20 -0.1
SPA 21 MEL 7 +0.1
QE 3 HA 35 -0.0
HA 14 EG 7 -0.0
If winner is:HomeTieAway
Wednesday, 4/11100.0*Chance in playoffs100.0*Average seed
LO vs OS-25.1-22.3In
-0.6-0.5+0.6
OS vs HAIn-22.5-25.1
+0.6-0.6-0.6
LO vs JPP+0.1-0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs123456789101112Count
142-0-0In37636,718,028
12-13In10014,148,609*
10-11Out1007,424,099*
Total:73.8%915502628,290,736

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs