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 -4.2
-0.5
Lippincott 124.4 Salsberry 80.3 -1.3
-0.1
Metheny 113 M Crouch 119.4 +1.3
+0.1
Smith 146 S Crouch 137 +0.5
+0.1
Flores 137.9 Lassiter 162.9 +0.4
-0.1
Week of 11/17100.0*Chance in playoffs100.0*Average seed
M Crouch 127.6 Purvis 133.3 +7.2
+0.6
Salsberry 116.8 Metheny 115.8 +2.9
+0.1
Lassiter 132.7 Smith 106.6 +2.7
McNichols 126 Flores 96.8 -2.7
-0.1
S Crouch 94.8 Lippincott 100.4 +2.0
-0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Lippincott 79.9 Lassiter 127 +0.2
Purvis 83.2 Salsberry 89.8 -0.2
Games Above .500
Chance Will Make Playoffs