How are these numbers calculated?

Big Games

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

Week of 1/25100.0*Chance in playoffs100.0*Average seed
David 132.5 Brent 126.5 -6.1
-0.4
Brent 161 Adam 149.5 +4.1
+0.5
David 196 Jacob 182.5 -0.5
Walsh 124.5 Micah 178 -0.5
+0.1
Nick 128 Birk 160.5 -0.4
-0.1
Adam 159.5 Jacob 154.5 +0.3
-0.1
Walsh 150 Nick 168 +0.1
Micah 175.5 Birk 158.5 -0.1
Dosters 102.5 Bill 213 -0.1
Week of 2/1100.0*Chance in playoffs100.0*Average seed
Brent 5 Micah 2 +2.6
+0.3
If winner is:HomeAway
Brent vs Nick+7.9Out
+0.6-0.6
David vs Birk+1.2-1.2
Walsh vs Adam-0.8+0.8
Micah vs Jacob-0.7+0.7
Dosters vs Adam-0.5+0.5
+0.1-0.1
Bill vs Birk+0.4-0.4
Bill vs Jacob+0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-OTLTplayoffs123456789101112Count
113-00061.1%02164335401,205,718
102-0100.7119503013,614,575
91-020Out1367203,611,774
80-030Out139601,205,861
Total:7.9%0026122441159,637,928
Points
Chance Will Make Playoffs