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
Sacramento 3 Swope Park 1 -5.5
-0.4
San Antonio 3 Seattle II 1 -3.7
-0.0
Reno 2 Tulsa 0 -0.6
-0.1
Phoenix 2 St Louis 0 +0.4
+0.1
Portland II 0 Reno 2 +0.1
Sacramento 1 Portland II 0 +0.1
Week of 10/5100.0*Chance in playoffs100.0*Average seed
San Antonio 3 Las Vegas 1 -8.6
-0.1
St Louis 1 Tulsa 0 -4.3
-0.2
Week of 10/13100.0*Chance in playoffs100.0*Average seed
Swope Park 5 Los Angeles II 1 In
+0.7
San Antonio 1 RGV 1 +8.3
+0.1
St Louis 0 OKC 0 +0.3
Phoenix 0 Portland II 1 -0.3
Points
Chance Will Make Playoffs