PHOENIX — Cleveland Indians pitcher Adam Miller is sidelined with soreness in the same right-hand finger that required surgery last season.

Miller, one of Cleveland's top prospects and a candidate to earn a spot in the bullpen, had surgery on the middle finger on his right hand to repair a tendon last May. He missed the rest of the season at Class AAA Buffalo, but returned to pitch in the Instructional League and winter ball.

Miller was scratched from a scheduled appearance Friday against San Diego. It's not known when he will throw again.

"We don't think it's anything to worry about, but we didn't want to push it," manager Eric Wedge said.

Miller, 24, can reach the high 90s with his fastball, but hasn't been able to stay healthy. He has spent the last two years at Buffalo, but appeared in only six games last season and 19 in 2007 because of issues with the finger. Miller also had elbow problems in 2005.

Miller was 15-6 with a 2.75 ERA at Class AA Akron in 2006. He has been a starter for most of his professional career and the Indians were hoping he would benefit from a move to the bullpen. The Indians selected him with the 31st pick in the 2003 draft.

Wedge said closer Kerry Wood, who has been bothered by a sore back, threw a bullpen session Friday with no problems. The manager isn't sure when Wood, who signed a two-year, $20.5 million contract in December to be the Indians closer, will throw again.

Outfielder Grady Sizemore had treatment on his strained left groin Saturday. The injury forced him from his spot on the United States roster in the World Baseball Classic.

Wedge said designated hitter Travis Hafner (right shoulder) and outfielder David Dellucci (left thumb) will likely make their first appearances in games next week. Hafner, who had surgery in October, has been taking batting practice. The shoulder bothered him most of last season when he hit .197 with five homers and 24 RBIs in 57 games.

Dellucci slammed the tailgate of his truck on his thumb a few days before reporting to camp.