How are these numbers calculated?

Big Games

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

Week of 3/29100.0*Chance in playoffs100.0*Average seed
Robby 170.8 Jon 132.5 -0.1
-0.5
Jeb 184.1 Harry 201.2 +0.3
Matt 188.2 Luke 161.3 -0.0
Ross 184.3 Jason 96.4 -0.1
Week of 4/5100.0*Chance in playoffs100.0*Average seed
Harry 229.4 Luke 200.6 -0.2
Jason 159.3 Jon 181.8 In
+0.3
Ross 226.7 Ken 218.4 In
-0.2
Jeb 179.1 Mike 192.2 +0.4
If winner is:HomeAway
Week of 4/12100.0*Chance in playoffs100.0*Average seed
Josh vs Jon-0.7+0.3
Jeb vs Ross+0.2-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
91-0In505040,072,894
80-1In505016,498,506
Total:In35501556,571,400
Games Above .500
Chance Will Make Playoffs