How are these numbers calculated?

Big Games

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

Week of 11/13100.0*Chance in playoffs100.0*Top 2100.0*Average seed
Craig 97.2 Scott 100.6 +12.5
+4.1
+0.9
Jay 78.4 Paul 86 +1.9
+1.0
Ruth 80.8 Jeremy 124.6 +1.1
+0.8
Josh 102.3 Gabby 143.3 +0.7
+0.8
Michael 107 Stacy 75.4 -0.2
+0.6
-0.1
Week of 11/20100.0*Chance in playoffs100.0*Top 2100.0*Average seed
Gabby 116.8 Scott 145.6 +25.0
+11.9
+1.5
Paul 80.7 Craig 94 -1.4
-3.6
-0.1
Jeremy 92.8 Josh 90.8 +0.3
+1.4
+0.1
Stacy 127.1 Jay 86 +0.3
+0.2
+0.1
Ruth 105.4 Michael 81.1 +0.1
+0.2
Week of 11/27100.0*Chance in playoffs100.0*Top 2100.0*Average seed
Scott 100.6 Jeremy 169.7 -49.5
No
-1.9
Josh 94.3 Ruth 89.8 +0.5
+2.3
-0.1
Gabby 109 Paul 59.4 -0.4
-0.3
Michael 77.6 Jay 80.9 -0.3
-0.1
Craig 112.2 Stacy 109.9 -11.4
-0.1
Games Above .500
Chance Will Make Playoffs