How are these numbers calculated?

Big Games

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

Week of 9/29100.0*Chance in playoffs100.0*Average seed
Phoenix 2 St Louis 0 -2.9
-0.4
San Antonio 3 Seattle II 1 -2.5
-0.0
Sacramento 3 Swope Park 1 +0.9
+0.1
Reno 2 Tulsa 0 -0.3
-0.1
Portland II 0 Reno 2 -0.2
+0.1
Sacramento 1 Portland II 0 +0.1
Salt Lake II 0 Col Springs 2 +0.1
Salt Lake II 2 OKC 1 -0.0
Week of 10/5100.0*Chance in playoffs100.0*Average seed
St Louis 1 Tulsa 0 +11.5
+0.4
San Antonio 3 Las Vegas 1 -6.1
-0.1
Week of 10/13100.0*Chance in playoffs100.0*Average seed
San Antonio 1 RGV 1 In
+0.1
St Louis 0 OKC 0 In
-0.2
Phoenix 0 Portland II 1 -0.5
Swope Park 5 Los Angeles II 1 -0.5
Points
Chance Will Make Playoffs