New York Mets Playoff Chances 2015-1 50/50

Did not play, playoff odds down 3.2 to 33.3%
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
Nationals 1 Mets 3 +18.1
+3.2
Marlins 2 Braves 12 -11.0
-0.5
Brewers 2 Rockies 5 -3.8
Diamondbacks 7 Giants 6 +3.7
Dodgers 3 Padres 7 +3.7
Phillies 0 Red Sox 8 +1.7
+0.3
Brewers 0 Rockies 10 -1.5
Games Above .500
Chance Will Make Playoffs