How are these numbers calculated?

Big Games

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

Tuesday, 5/8100.0*Chance in playoffs100.0*Average seed
Pathfinders 0 Raiders 3 -17.3
-0.7
Quakes 0 LAHC 1 +8.2
Chews 0 U-Boats 4 -5.8
Wednesday, 5/9100.0*Chance in playoffs100.0*Average seed
U-Boats 0 Pathfinders 2 In
+0.8
Raiders 1 Chews 3 -5.9
-0.0
Thursday, 5/10100.0*Chance in playoffs100.0*Average seed
Pathfinders 1 Chews 0 (ot)-0.4
Raiders 1 U-Boats 2 +0.3
Points
Chance Will Make Playoffs