There are plenty of loathsome trades in the history of the Houston Astros franchise, but this is one of the worst. Fans pretty much have come to a consensus that Billy Wagner was the best relief pitcher to ever wear the Astros uniform, and the club traded him away for basically nothing.
Wagner had established himself as one of the best closers in the game. The flamethrowing left-hander, who taught himself to throw left-handed after sustaining injuries to his right arm as a child, had notched 225 saves with a 2.53 ERA in nine seasons with Houston.