How are these numbers calculated?

Big Games

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

Week of 8/3100.0*Chance in playoffs100.0*Average seed
Orlando 0 Pittsburgh 1 -2.6
-0.1
Tampa Bay 0 Orlando 3 +1.9
+0.1
Dayton 0 Wilmington 1 +1.0
+0.1
Los Angeles 2 Charleston 1 -0.8
+0.0
Rochester 1 Pittsburgh 0 +0.7
+0.1
Wilmington 2 Dayton 1 +0.7
+0.1
Charleston 5 Richmond 2 -0.4
-0.2
Los Angeles 2 Harrisburg 2 +0.2
+0.0
Week of 8/10100.0*Chance in playoffs100.0*Average seed
Charlotte 5 Antigua 0 In
+0.8
Harrisburg 3 Tampa Bay 1 +0.6
-0.1
Richmond 5 Dayton 2 +0.6
+0.1
Phoenix 0 Charleston 1 -0.2
Charleston 3 Antigua 0 -0.3
Tampa Bay 3 Charlotte 3 -0.2
Wilmington 4 Pittsburgh 1 +0.1
Week of 8/17None
Points
Chance Will Make Playoffs