St. Louis Cardinals Playoff Chances 2014-2 50/50

Beating Marlins 3-0 (Bot 5th), playoff odds unchanged at 55.2%
63-56-0   .529

How are these numbers calculated?

Big Games

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

Sunday100.0*Chance in playoffs100.0*Average seed
Cardinals 6 Astros 3 +2.7
+0.3
Orioles 6 Pirates 5 +0.3

What If

Chances based on how well the Cardinals finish out the regular season.   Explain

Games Above .500
Chance Will Make Playoffs