How are these numbers calculated?

Big Games

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

Week of 5/28100.0*Chance in playoffs100.0*Average seed
Chile 6 Italy 50 +31.8
+0.6
Italy 33 Namibia 7 +17.1
+0.6
Portugal 26 Namibia 17 -1.3
-0.0
Chile 18 Portugal 6 -0.2
-0.0
Week of 6/5100.0*Chance in playoffs100.0*Average seed
Italy 59 Portugal 13 Yes
+0.3
Chile 23 Namibia 21 -1.5
-0.1
Games Above .500
Chance Will Make Playoffs