Baseball fans were treated to two historic collapses last September. The Atlanta Braves blew a huge lead in the NL wild card race and fumbled away a chance to go to the postseason on the final day of the regular season.
The Boston Red Sox lost first their lead in the AL East and then their lead in the AL wild card race, and they too fumbled away a chance to go to the postseason on the final day of the season.
One of these teams has recovered quite nicely since last September. The other has not.
You'd never tell from looking at the 2012 Braves that they crashed and burned at the end of the 2011 season. They have the third-best record in the National League, and they once again have a comfortable lead in the NL wild card race.
The Red Sox, on the other hand, are still very much in the hole they fell into last September. They're on track to finish with a sub-.500 record for the first time since 1997, and they certainly don't look like a team that is capable of avoiding such a dire fate.
So what gives? How have the Braves turned their fortunes around since last September and the Red Sox haven't?
There's more than one reason, of course. And here they are.
Note: All stats come from Baseball-Reference.com unless otherwise noted.