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
Steve Menendian 0 Bob Maher 1 -4.4
-0.5
Eric Froehlich 0 Rich Shay 1 +0.9
+0.1
Chris Pikula 0 Luis Scott-Vargas 1 +0.8
Tom Martell 1 David Williams 0 -0.6
Randy Buehler 0 Josh Utter-Leyton 1 +0.5
If winner is:HomeAway
Week of 10/21100.0*Chance in playoffs100.0*Average seed
Randy Buehler vs Steve Menendian-5.8+5.8
-0.5+0.5
Chris Pikula vs Bob Maher-2.6+2.6
-0.1+0.1
Tom Martell vs Josh Utter-Leyton-2.1+2.1
-0.1+0.1
Eric Froehlich vs David Williams-1.4+1.4
-0.1+0.1
Rich Shay vs Luis Scott-Vargas-1.0+1.0
+0.1-0.1

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
72-0In50503,395,040
61-199.9%86326306,780,382
50-276.39284022203,392,078
Total:94.0%1746201151013,567,500
Games Above .500
Chance Will Make Playoffs