David Herndon, the Phillies' 2010 Rule 5 pick who spent parts of three seasons with the club, is expected to be out until mid-2013 as he continues his recovery from Tommy John surgery.
Beerleaguer: Herndon, 27, appeared in 97 games for the Phillies, pitching mostly B-list and sponge innings to varying degrees of success, which the Phils happily accepted considering he was a Rule 5 pick without an inning of experience above Double-A. The right-handed sinker baller pitched to a 3.85 ERA and 76/42 K/BB in 117 innings until his elbow gave out early last season. He made the club's opening day roster in each of the last three seasons. He was actually quite strong from late May of 2011 until the end of the season, although the Phils continued to use him in advantageous spots (of course, on a 102-game winner with stellar starting pitching, his entire existence as a middle reliever was advantageous).
The move clears roster space as the Phils gear up for the Rule 5 draft and other dealings. He's kind of at his ceiling, and considering he's expected to be out until mid-season, that makes him expendable as the Phils cycle in their young crop of arms.