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
Salt Lake City 0 Orange County 2 -20.7
-1.2
Salt Lake City 2 San Antonio 0 +8.4
+1.1
San Antonio 1 St Louis 3 +2.7
+0.0
Swope Park 3 Tulsa 0 -0.9
-0.0
Los Angeles 1 RGV 0 -0.6
OKC 2 Seattle 2 +0.3
Arizona 1 Portland 2 -0.3
-0.1
Los Angeles 1 Sacramento 1 -0.2
RGV 0 Portland 1 -0.1
-0.2
Week of 9/17100.0*Chance in playoffs100.0*Average seed
Arizona 3 Salt Lake City 2 -12.1
-0.8
Orange County 0 RGV 1 +9.1
+0.1
Vancouver 0 Portland 2 -4.3
-0.4
San Antonio 2 Tulsa 0 -1.2
-0.2
Col Springs 2 Seattle 1 +0.7
+0.1
OKC 0 Swope Park 3 -0.2
St Louis 1 Louisville 5 +0.1
Week of 9/24100.0*Chance in playoffs100.0*Average seed
Orange County 4 Col Springs 0 Out
-0.1
Portland 3 Arizona 2 Out
+0.1
Los Angeles 3 Salt Lake City 1 Out
-0.5
RGV 3 San Antonio 0 +1.6
+0.1
Swope Park 2 Seattle 0 +0.2
Points
Chance Will Make Playoffs