2014 was quite the disappointment for the Boston Red Sox. After winning a championship the previous year, the team suffered the ultimate World Series hangover.
Jon Lester was sent to Oakland in exchange for Yoenis Cespedes (which essentially became Rick Porcello), but lurking in the shadow of that trade was the one which sent John Lackey to St. Louis for Allen Craig and Joe Kelly. The irony in this trade is that Lackey picked up the win against the Cardinals in Game 6 of the 2013 World Series, pitching a strong 6 2/3 innings.