Detroit Tigers Playoff Chances 2015-1 50/50

Did not play, playoff odds up 0.3 to 64.3%
1-0   1.000

How are these numbers calculated?

Big Games

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

Week of 4/5100.0*Chance in playoffs100.0*Average seed
Tigers 4 Twins 0 +29.8
+3.8
Astros 2 Indians 0 +2.9
+0.2
Rays 5 Orioles 6 +1.1
-0.1
Phillies 0 Red Sox 8 -0.9
-0.2
Mariners 0 Angels 2 +0.5
+0.1
Athletics 1 Rangers 3 +0.5
+0.1
Games Above .500
Chance Will Make Playoffs