Posada's father, Jorge Sr., told The Associated Press that his son has already signed a participation agreement for the Classic.
"He feels fine and wants to play for Puerto Rico," Posada Sr. reportedly said.
Jorge Posada, who had expressed interest in playing for Team Puerto Rico, was not listed on the club's provisional roster as he recovers from right shoulder surgery.
That's a good sign. Also, the Yankees do in fact have the right to block Posada from playing in the WBC, since he ended last year on the DL. – thank Fletch for that rule