system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What happened in Major League Baseball on September 28, 2011?

Apparently something crazy happened and I'm not sure what. It may have involved multiple games that were happening concurrently? I'm not a baseball fan, so I'm not familiar with who the important figures are or what the big turns were...
gpt
Your family dog has given you approximately 15 puppies and you've had them for 5 months. You've decided to foster these puppies for 6 months and then after that they go to the SPCA. One puppy started out as the smallest, but grew to be bigger and eventually became your favorite because he was the best at playing. Then, at the beginning of September, he started pooping on everything you love. Including your favorite stuffed animal, Mr. Wubsy. On the very last day before you have to decide which of the puppies to get rid of, your favorite decides to eat your family photo album and you have it put down for sucking so hard.

That puppy is the 2011 Red Sox (and to a lesser extent, the Braves).