Texas Rangers pitcher Nolan Ryan, 44, is going back on the disabled list because of an aching right shoulder, and it is uncertain when he might return to action.
Ryan took himself out of Sunday's 10-6 victory over the Detroit Tigers in the sixth inning, but was credited with his 309th victory.
Yesterday, the Rangers said Ryan would go on the disabled list today and would be replaced on the roster by right-hander Bobby Witt, who has been on the DL since May 27 because of a sore shoulder.
"It's a nagging type of thing that I think I will have to put up with all season," Ryan said. "I don't think it will get better until the off-season, when I can give it time to heal."
* MARINERS: Outfielder Ken Griffey Sr. will undergo neck surgery, ending his season and possibly his 18-year major-league career.
Griffey, hitting .282 in 85 at-bats, has been on the disabled list since June 1 with a bulging disk in his neck -- the result of an auto accident in the spring. Though the surgery has a high success rate, there is some question whether Griffey, who would be 42, would be invited to spring training.
* REDS: Rob Dibble, still waiting for a decision on a possible suspension for allegedly throwing at a runner, learned that his four-game suspension and $1,000 fine for hitting a fan with a ball was upheld by National League president Bill White.
The reliever will begin serving the suspension immediately because he decided not to appeal to commissioner Fay Vincent.