St. Louis Cardinals Playoff Chances 2012 50/50

Beat Cincinnati 1-0, average seed unchanged at 5
88-74   .543

How are these numbers calculated?

Big Games

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

Monday100.0*Chance in playoffs
St. Louis 4 Cincinnati 2 +4.7
Dodgers 3 Giants 2 -4.7
Tuesday100.0*Chance in playoffs
Dodgers 3 Giants 4 In
St. Louis 1 Cincinnati 3 -3.1
WednesdayNone
Games Above .500
Chance Will Make Playoffs