Eric O'Flaherty (elbow) threw an 18-pitch bullpen session Tuesday.
It was the first time since last May's Tommy John surgery that O'Flaherty threw the full distance from the mound to the catcher. The A's are hoping to have the left-hander has part of their bullpen but June.
Reds optioned OF Yorman Rodriguez to Double-A Pensacola; reassigned RHPs Robert Stephenson, Tim Crabbe and Michael Lorenzen, 3B Rey Navarro, Cs Rossmel Perez and Max Ramirez to minor league camp.
There are some notable names but no surprises among this group. Rodriguez, Stephenson and Lorenzen were all ranked by Baseball America among the team's top-six prospects. It's possible their Stephenson, their top prospect, will make his major league debut sometime this season.