How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/3100.0*Chance in playoffs100.0*Average seed
Shroff 86.3 Petrella 87.6 -12.7
-0.4
Alter 102.6 Keating 100.9 -3.6
-0.1
Swikart 123.1 Cohen 80.8 -3.4
-0.1
Swords 149.9 Mendoza 88.5 -3.2
-0.1
Del Cueto 126.6 Brockett 94.7 -2.5
-0.1
If winner is:HomeAway
Week of 11/10100.0*Chance in playoffs100.0*Average seed
Mendoza vs Shroff-4.3+4.2
-0.2+0.2
Brockett vs Swords+1.3-1.2
+0.1-0.1
Illgen vs Alter+1.2-1.2
Keating vs Swikart+1.1-1.2
Petrella vs Del Cueto+1.0-1.0

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
84-054.7%222313691,371,784
73-17.501641525,544,827
62-20.1010898,423,642
51-3Out19905,695,854
40-4Out9461,445,685
Total:5.2%0231678022,481,792
Games Above .500
Chance Will Make Playoffs