May 20, 2007 7:08 PM EST

Josh Hamilton was sent back to Cincinnati by the Reds on Sunday to be checked out by team doctors one day after he was diagnosed with a stomach ailment.

The 25-year-old, who has made an inspirational comeback from drug and alcohol addiction, was taken to Lutheran Hospital at 5:45 a.m. on Saturday. The club said he had gastroenteritis, an inflammation or infection of the gastrointestinal tract. Hamilton was released from the hospital, but remained in his hotel room when the Reds beat the Indians Saturday night.

"He was feeling a little bit better," Reds manager Jerry Narron said following Cincinnati's loss Sunday. "He finally had something to eat. Hopefully, he'll be better tomorrow and he'll be able to play sometime early in the week."

The Reds open a four-game series at home on Monday against the Nationals.

Via AP