How are these numbers calculated?

Big Games

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

Week of 8/26100.0*Chance in playoffs100.0*Average seed
Rapids 3 Miami 1 -16.4
-0.7
DC United 2 Miami 1 -15.5
-0.6
Revolution 2 Crew 1 -9.1
-0.4
Revolution 1 DC United 0 -5.7
-0.3
Crew 3 Tampa Bay 4 +4.0
+0.1
Fire 4 Dallas 0 +3.1
+0.1
Earthquakes 3 Crew 0 +2.2
+0.1
Dallas 4 New York 6 +1.6
Rapids 1 Wizards 1 +0.3
+0.0
Week of 9/2100.0*Chance in playoffs100.0*Average seed
New York 2 Miami 1 -22.2
-0.7
Miami 4 New York 1 +14.9
+0.5
Rapids 1 Galaxy 0 Out
-0.2
Fire 2 Rapids 1 +7.5
+0.2
Fire 3 Crew 1 +3.8
+0.1
Galaxy 0 Dallas 1 -2.7
-0.0
DC United 2 Revolution 0 +1.0
+0.1
Week of 9/9100.0*Chance in playoffs100.0*Average seed
Crew 2 Fire 3 +0.3
DC United 2 Miami 6 +0.3
Points
Chance Will Make Playoffs