SARASOTA, Fla. -- Add Orioles pitcher Tommy Hunter to the growing list of pitchers already dealing with ailments this spring.

Hunter, who is dealing with a stiff lower back, was scratched from his scheduled Grapefruit League outing on Tuesday against the Red Sox. Instead, he will pitch a two-inning simulated game. Orioles manager Buck Showalter said the move is precautionary, but we'll have to wait and see. Chris Tillman will take Hunter's place on Tuesday.

Some more details about the team's intrasquad games the next two days (Friday and Saturday): Both games are closed to the general public, but Saturday's game will be open to Orioles spring training season-ticket holders.

The team will bring up about nine players from the minor league camp -- among them, top position-player prospects Manny Machado and Jonathan Schoop -- to play in the games. Showalter mentioned that he's interested in seeing outfielders Trent Mummey and Glynn Davis.

As for the major league campers, they're looking forward to finally getting into the game atmosphere.

"It's nice to get the games going," catcher Matt Wieters said. "It's nice to face live pitching. It's good to get a game going so we can really see what we need to work on and things in game situations that you might need to practice before you go out there for the games. I think once you get two weeks into working on the fundamentals, which you definitely need, most baseball players are ready to go."

In other news:

-- Japanese LHP Tsuyoshi Wada (left elbow discomfort) made 25 throws from 50 feet. He is scheduled to do the same tomorrow. It's too soon to predict a timetable on when Wada will be able to pitch in a game.

-- Nonroster invitee Oscar Villarreal returned to camp today. He was absent yesterday while dealing with some immigration paperwork.

-- There's still no sign of nonroster catcher Ronny Paulino, but his car did arrive at the Ed Smith Stadium complex.

-- RHP Willie Eyre (groin) is progressing. He's now participating in pitchers' fielding practice.