Washington Nationals Playoff Chances 2013 50/50

Lost to Diamondbacks 2-3, lottery seed unchanged at 12
86-76   .531

How are these numbers calculated?

Lottery

We are out of the playoffs. Here are the big games and what ifs for draft seeds.
Although it might be more fun to go down swinging.

Big Games

Friday100.0*Lottery seed
Diamondbacks 4 Nationals 8 -0.4
Orioles 3 Red Sox 12 -0.2
White Sox 1 Royals 6 +0.1
Astros 2 Yankees 3 +0.1
Saturday100.0*Lottery seed
Diamondbacks 0 Nationals 2 -0.3
White Sox 6 Royals 5 -0.2
Orioles 6 Red Sox 5 +0.1
SundayNone
Games Above .500
Chance Will Make Playoffs