The Red Sox traded Mientkiewicz for a baseball. They traded him to the Mets for a minor leaguer and the World Series winning baseball. That's gotta kill the ego. Shoulda just given them the ball when they asked, man!
The article says:
According to Red Sox general manager Theo Epstein, "the ball issue was never a factor in this trade or in this negotiating process. We had a baseball decision to make."
Yes. Yes, of course...