The Red Sox designated reliever David Aardsma for assignment today to clear space on the 40-man roster for Mark Kotsay. Aardsma had an impressive beginning for the Sox but injuries took its toll on the way down the homestretch. He finished with 48.2 innings pitched of a 5.55 ERA. If he clears waivers and stays with the organization, he will compete for a bullpen spot.
