How are these numbers calculated?

Big Games

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

Week of 4/26100.0*Chance in playoffs100.0*Average seed
van Barneveld 6 Cross 6 -3.0
-0.0
Whitlock 7 Anderson 5 +1.3
-0.1
Smith 1 van Gerwen 7 +0.9
Wright 1 Smith 7 -0.8
+0.1
Gurney 6 van Gerwen 6 -0.0
Week of 5/3100.0*Chance in playoffs100.0*Average seed
Anderson 3 van Barneveld 7 +1.6
+0.5
Gurney 6 Smith 6 -0.1
Wright 7 Whitlock 4 +0.1
Week of 5/10100.0*Chance in playoffs100.0*Average seed
Smith 6 van Barneveld 6 Out
+0.1
van Gerwen 5 Anderson 7 Out
Wright 6 Gurney 6 +0.2
+0.1
Games Above .500
Chance Will Make Playoffs