How are these numbers calculated?

Big Games

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

Week of 11/27100.0*Chance in playoffs100.0*Average seed
STEWART 109.5 CASEY 85 +0.6
STEVE 131 ALEX 127.5 -0.2
STANEK 92.5 KNIGHT 87.5 -0.1
BRETT 107.5 JARED 101.5 -0.1
NICK 65.5 KIRK 116 +0.0
If winner is:HomeAway
Week of 12/4100.0*Chance in playoffs100.0*Average seed
JARED vs STEWARTOut+3.5
-0.1+0.9
ALEX vs NICK-0.5+1.1
+0.0-0.1
CASEY vs KNIGHT+0.2-0.2
+0.1-0.1
BRETT vs STEVE-0.1+0.1
+0.2-0.1
KIRK vs STANEK+0.1-0.2

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
72-06.8%7553071,246,848
61-1Out1941382010,346,918
50-2Out415727,026,555
Total:0.5%014253723118,620,321
Games Above .500
Chance Will Make Playoffs