Originally Posted by TeamSelig
Because he has been demoted to bullpen in the past (not really sure but I thought he was still stuck in the Sox pen), and if he was in our pen then he would be our closer.
Meaning we probably just traded one of our best hitters for an average closer
He was only in the pen because the Sox had 7 major league starters.
We traded Pena for an above average starter, plain and simple because that is the role he will be playing for us.