Oakland Athletics Playoff Chances 2014-2 50/50

Tied with Royals 0-0 (End 1st), playoff odds unchanged at 99.1%
73-48-0   .603

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
Mariners 6 Athletics 4 -3.1
-0.3
Athletics 6 Cubs 10 -2.6
-0.3
Cardinals 6 Astros 3 +0.3

What If

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

Games Above .500
Chance Will Make Playoffs