How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Chance in playoffs100.0*Average seed
Ross 83.14 Blair 78.42 -16.4
-1.2
Campo 85.18 Nick 69.86 -2.7
-0.2
Neil 114.38 Cunje 120.04 +2.6
+0.1
Goodman 54.68 Aaron 114.8 -1.5
-0.1
Kevin 91.5 Dave 78.62 +1.0
+0.2
Chris/Jonny 110.14 Alex 126.68 +0.7
Week of 11/29100.0*Chance in playoffs100.0*Average seed
Blair 94.74 Cunje 127.12 Out
-0.8
Ross 102.98 Alex 87.08 +5.8
+0.2
Chris/Jonny 147.6 Dave 141.8 -2.0
Neil 88.9 Campo 85.86 +0.7
-0.1
Kevin 95.82 Aaron 179.8 -0.3
If winner is:HomeAway
Week of 12/6100.0*Chance in playoffs100.0*Average seed
Ross vs Dave+0.3-0.3
Blair vs Alex+0.2-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
51-0Out9378,998,815
40-1Out50509,000,729
Total:Out712917,999,544
Games Above .500
Chance Will Make Playoffs