May 22, 2009 10:03 AM EST

Colorado general manager Dan O'Dowd says that the club is unlikely to improve their roster via trades.

"At this point, you would be trading an undervalued player for another undervalued player," O'Dowd said. "One player is not going to get us out of this."

The Rockies are 16-24, and occupy last place in the NL West.

Via Denver Post