Yes, I realize it's only April 7, but there are already Red Sox fans out there ready to plunge off bridges. While that may be a bit of an overreaction, some fans of other teams aren't finding much to be optimistic about at this point, either.So what happens as the season progresses and teams fall further and further behind in their respective pennant races? The answer to that is sell, sell, sell.Mainly what I decided to explore here are teams that have had some semblance of playoff expectations from the start. There are a few exceptions to that, but it's ...