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 +0.8
RS 12 HA 33 +0.8
LO 17 SPA 11 -0.1
LO 21 JPP 14 -0.1
SAL 37 BF 12 +0.1
RS 4 OS 19 -0.0
If winner is:HomeTieAway
Monday, 4/8100.0*Average seed
LO vs OS-0.3-0.2+0.3

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
102-0-0In2656186,107,705
91-0-1In125137642,498
81-1-0In495112,199,195
0-0-2In495116,937
70-1-1In5149644,136
60-2-0In24946,107,465
Total:In7383122225,717,936
Games Above .500
Chance Will Make Playoffs