The Nats' nine-game losing streak has forced GM Jim Bowden to make some roster changes.

Jason Bergmann was optioned to Class AAA Columbus after allowing four runs over two innings in relief during today's 10-2 loss to the Braves. Clearly, the right-hander needs to get some things straightened out, because he has looked horrible the last two times out (and he'll be the first to admit that).

Chad Cordero will take Bergmann's roster spot and has been activated off the DL. He probably won't pitch in a closer's role tomorrow but could get an inning in earlier in the game and then slide back into his usual role after that.

Wily Mo Pena is expected to be activated off the DL in time for tomorrow's game as well. Pena will get a couple of at-bats with Columbus tonight, then immediately catch a flight to D.C. and start in left field tomorrow. Will be interesting to see how much difference he makes to a Nationals lineup that has been dreadful.

Pena's return will require another roster move before tomorrow's game. Best bet is either for a reliever (Chris Schroder?) to be sent down, or perhaps Jesus Flores (since the Nats now have three healthy catchers).