1 year deal. Details to come. Yay actual news and things.
Short analysis: Byrnes can field and used to be able to hit and can still hit lefties. He cannot stay healthy.
Fuller analysis, Dave's post on Byrnes from two weeks ago is here.
I like the move since Arizona is likely picking up the full tab above the pro-rated minimum, but if I had my druthers, I would still be calling the Nats about Willingham.