How are these numbers calculated?

Big Games

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

Week of 11/10100.0*Chance in playoffs100.0*Average seed
Purvis 88.1 McNichols 126.2 -1.5
-0.4
Metheny 113 M Crouch 119.4 +0.6
+0.1
Smith 146 S Crouch 137 +0.3
+0.1
Lippincott 124.4 Salsberry 80.3 -0.1
Flores 137.9 Lassiter 162.9 -0.0
Week of 11/17100.0*Chance in playoffs100.0*Average seed
M Crouch 127.6 Purvis 133.3 +1.9
+0.2
Salsberry 116.8 Metheny 115.8 +0.8
Lassiter 132.7 Smith 106.6 +0.1
-0.0
S Crouch 94.8 Lippincott 100.4 -0.1
-0.1
McNichols 126 Flores 96.8 -0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Purvis 83.2 Salsberry 89.8 -0.3
Lippincott 79.9 Lassiter 127 +0.1
Games Above .500
Chance Will Make Playoffs