How are these numbers calculated?

Big Games

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

Week of 9/9100.0*Chance in playoffs100.0*Average seed
Swope Park 3 Tulsa 0 +18.5
+1.1
San Antonio 1 St Louis 3 +3.3
+0.1
Salt Lake City 0 Orange County 2 -1.8
-0.0
OKC 2 Seattle 2 +1.6
+0.1
Los Angeles 1 RGV 0 -0.5
-0.2
Salt Lake City 2 San Antonio 0 +0.3
+0.0
RGV 0 Portland 1 -0.3
Arizona 1 Portland 2 -0.2
Los Angeles 1 Sacramento 1 -0.1
+0.0
Vancouver 0 Col Springs 2 +0.1
+0.0
Week of 9/17100.0*Chance in playoffs100.0*Average seed
OKC 0 Swope Park 3 In
+1.0
Arizona 3 Salt Lake City 2 +2.7
+0.1
Orange County 0 RGV 1 +2.6
+0.0
Col Springs 2 Seattle 1 +2.2
+0.0
San Antonio 2 Tulsa 0 -2.0
-0.1
Vancouver 0 Portland 2 -1.7
+0.2
Tulsa 1 Swope Park 3 +0.8
Sacramento 1 Los Angeles 1 +0.0
Week of 9/24100.0*Chance in playoffs100.0*Average seed
Swope Park 2 Seattle 0 +0.5
Los Angeles 3 Salt Lake City 1 -0.4
RGV 3 San Antonio 0 -0.1
Points
Chance Will Make Playoffs