San Francisco Giants Playoff Chances 2014-3 50/50

Beat White Sox 7-1, playoff odds unchanged at 51.3%
63-57   .525

How are these numbers calculated?

Big Games

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

Tuesday100.0*Chance in playoffs100.0*Average seed
Rockies 5 Giants 4 -3.2
-0.3
Padres 3 Twins 5 +0.4
Wednesday100.0*Chance in playoffs100.0*Average seed
Rockies 1 Giants 5 +3.3
+0.3

What If

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

Games Above .500
Chance Will Make Playoffs