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*Average seed
Kevin 90.5 Ira 93.18 +0.6
Chris 113.8 Brian 95.57 -0.1
Dan 105.62 Mike 130.94 -0.1
Jonny 92.2 Angelo 91.38 +0.1
Week of 11/29100.0*Average seed
Ira 78.04 Angelo 152 -0.1
Luke 58.97 Mike 114.72 -0.1
If winner is:HomeAway
Week of 12/6100.0*Average seed
Ira vs John+0.2-0.3
Kevin vs Mike+0.2-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
101-0In1009,005,785
90-1In50508,993,759
Total:In752517,999,544
Games Above .500
Chance Will Make Playoffs