per Fay via Twitter:
"Willin Castillo is here. My guess is Gonzalez is on the DL with the sore elbow."
"Shortstop Alex Gonzalez was put on the disabled list with an elbow problem. He has four loose bodies floating in the area. He'll have surgery. They're hoping he'll be back in four weeks. He hurt on a swing in the final game with the Braves.
Wilkin Castillo and Danny Richar are being added to the roster. A couple of more moves are coming. Richar has to be added to 40-man. The moves won't be announced until the tell the players affected."