The Washington Nationals were mathematically eliminated from postseason contention with an 8-5 loss at home to Atlanta in 13 innings.
The Nationals have 82 losses and are eliminated despite the fact that the leader in the wild card race (San Diego) doesn't have 81 wins yet. However, since San Diego has 78 wins, the Dodgers 77, and the Rockies 76 AND San Diego plays Colorado three times and Colorado plays Los Angeles seven times, one of them will have to end up with at least 81 wins.
If San Diego won only 2 of 3 against the Rockies and no more games, they would have 80. The Rockies would then have 78 wins. But the Rockies and Dodgers are going to be 3-4 or 4-3, which would give one of those teams 81 wins.