How are these numbers calculated?

Big Games

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

Week of 10/14100.0*Chance in playoffs100.0*Average seed
Eric Froehlich 0 Rich Shay 1 -21.5
Tom Martell 1 David Williams 0 +2.4
Chris Pikula 0 Luis Scott-Vargas 1 +1.3
Steve Menendian 0 Bob Maher 1 +0.4
Randy Buehler 0 Josh Utter-Leyton 1 +0.1
If winner is:HomeAway
Week of 10/21100.0*Chance in playoffs100.0*Average seed
Eric Froehlich vs David Williams+19.9-31.7
Tom Martell vs Josh Utter-Leyton-6.1+15.8
Chris Pikula vs Bob Maher-3.9+10.1
Rich Shay vs Luis Scott-Vargas-4.0+0.8
Randy Buehler vs Steve Menendian+3.2-0.7

What If

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

If finish:Chance inChance will finish regular season at seed
Games Above .500
Chance Will Make Playoffs