CINCINNATI -- Ken Griffey Jr. dislocated his right shoulder while diving for a fly ball Saturday, the second year in a row that the Cincinnati Reds outfielder was hurt in the season's first week.

	Ken Griffey Jr. injured his shoulder chasing Paul Bako's line drive.

Griffey grabbed his right shoulder and rolled on the ground in severe pain after diving for a fly ball in the eighth inning of a game against the Chicago Cubs.

He left the game immediately and had the shoulder popped back into place by team physician Dr. Timothy Kremchek. Griffey was taken to a hospital for tests to see how much damage was done.

There was no immediate estimate on how long he'll be sidelined.

Griffey turned his back to the infield and tried to run down Paul Bako's drive with the bases loaded and two outs, and the Cubs leading 6-5. He stretched his right arm and dived, but the ball eluded his outstretched glove.

Griffey landed hard on his right side, rolled over, grabbed the shoulder and kicked his legs in pain. He remained on the ground for several minutes, making no attempt to get up, while teammates ran to him. Bako wound up with a triple.

After trainers reached him, Griffey got up and walked out the center field gate next to the Reds' bullpen, holding his right arm carefully.

Injuries have marred his stay in his hometown. Since the Reds obtained him from Seattle in February 2000, Griffey has sustained a series of leg injuries.

He pulled a hamstring in 2000 and tore the same hamstring late in spring training 2001. Last season, he tore a tendon in his right knee after rounding third base in the sixth game of the season.

He has played in only 186 games the last three season and hit 31 homers. His only homer this season left him at 469.

He's the second star to suffer a major shoulder injury this week. The Yankees' Derek Jeter hurt his right shoulder on opening day in a violent collision at third base.