How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Tuesday, 4/20100.0*Chance in playoffs100.0*Eliminated100.0*Average seed
Aspinall 6 Clayton 6 +0.5
-0.5
+0.0
Wright 4 Wade 7 -0.2
+0.2
+0.1
Durrant 4 de Sousa 7 -0.1
+0.1
-0.0
Cross 4 Van den Bergh 7 -0.1
van Gerwen 6 Anderson 6 +0.0
Wednesday, 4/21100.0*Chance in playoffs100.0*Eliminated100.0*Average seed
Cross 5 Aspinall 7 In
No
+0.7
van Gerwen 7 de Sousa 4 +0.1
-0.1
-0.1
Wade 7 Clayton 2 +0.1
Anderson 5 Van den Bergh 7 -0.0
Thursday, 4/22100.0*Chance in playoffs100.0*Eliminated100.0*Average seed
Aspinall 7 Anderson 2 +0.4
Clayton 7 van Gerwen 3 +0.4
Van den Bergh 6 Wade 6 +0.0
Games Above .500
Chance Will Make Playoffs