How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Sunday, 5/26100.0*Chance in playoffs100.0*Average seed
Redstone Reapers 3 New Gettysburg 2 -2.3
+0.1
Shakuras Inquis 3 Korhal War Pigs 4 -2.3
-0.5
Aiur Storms 3 Mar Sara Threat 8 +1.9
+0.1
Sunday, 6/2100.0*Chance in playoffs100.0*Average seed
Shakuras Inquis 2 Aiur Storms 6 -12.0
-1.0
Aiur Storms 4 Char Meleons 3 -9.9
Redstone Reapers 4 Shakuras Inquis 1 -3.9
-0.7
Mar Sara Threat 8 Tarsonis City T 3 +0.3
New Gettysburg 3 Korhal War Pigs 7 +0.1
Char Meleons 4 New Gettysburg 3 (ot)+0.1
Points
Chance Will Make Playoffs