How are these numbers calculated?

Big Games

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

Week of 4/2100.0*Chance in playoffs100.0*Average seed
Palmeiras 2 Tigre 0 +13.2
+0.4
Week of 4/9100.0*Chance in playoffs100.0*Average seed
Palmeiras 1 Libertad 0 In
+0.9
Tigre 3 Sporting Cristal 1 +17.5
Week of 4/16100.0*Chance in playoffs100.0*Average seed
Sporting Cristal 1 Palmeiras 0 -0.5
Libertad 3 Tigre 5 +0.2
Points
Chance Will Make Playoffs