How are these numbers calculated?

Big Games

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

Tuesday, 4/2100.0*Average seed
OS 16 HA 20 +0.9
RS 12 HA 33 +0.3
LO 17 SPA 11 -0.2
LO 21 JPP 14 -0.0
SPA 17 JPP 15 +0.0
RS 4 OS 19 -0.0
SAL 37 BF 12 +0.0
If winner is:HomeTieAway
Monday, 4/8100.0*Average seed
LO vs OS-0.3+0.2+0.5

What If

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

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs12345678Count
102-0-0In5524353,661,624
91-0-1In138613,562,321
81-1-0In356528,097,294
0-0-2In356559,036
70-1-1In6535933,043
60-2-0In1024663,704,490
Total:In343501390,017,808
Games Above .500
Chance Will Make Playoffs