How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Chance in playoffs100.0*Average seed
Drew 98.98 Brian 126.48 -7.7
-1.1
Justin 125.4 Anton 115.82 +1.3
+0.1
Cassidy 116.06 Dan V 127.32 -0.9
-0.1
Dan O 130.52 Nick 149.48 -0.6
-0.1
Matt 105.04 Tyler 110.04 -0.1
+0.0
Rob 133.1 Luke 15.6 -0.1
Week of 11/25100.0*Chance in playoffs100.0*Average seed
Rob 127.66 Drew 113.72 -13.6
-1.1
Matt 125.06 Nick 154.62 +3.7
-0.0
Luke 58.52 Anton 164.02 -2.1
-0.1
Tyler 104.73 Cassidy 79.96 -1.8
-0.2
Dan O 125.37 Brian 110.18 +1.4
+0.2
Dan V 121.68 Justin 111.91 -0.8
-0.2
If winner is:HomeTieAway
Week of 12/2100.0*Chance in playoffs100.0*Average seed
Luke vs Drew-32.0InIn
-1.2+0.1+1.2
Dan V vs Anton+12.5+12.5-13.0
+0.1+0.1-0.1
Matt vs Brian-9.4+8.9+9.0
+0.0+0.3-0.0
Tyler vs Justin-0.2-0.2+0.2
Nick vs Cassidy-0.1-0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
81-0-0In31634341312,602,049
7.50-0-1In5050513,557
70-1-037.2%334451712,602,338
Total:69.2%2816192422925,717,944
Games Above .500
Chance Will Make Playoffs