BASEBALL zzzzzzzzzzeague * Oakland Athletics -- Placed Rickey Henderson (outfielder) on the 15-day disabled list, retroactive to April 12. Optioned Reggie Harris (pitcher) to Tacoma of the Pacific Coast League. Recalled Fred Manrique (infielder) and Brad Komminsk (outfielder) from Tacoma.

National League * Chicago Cubs -- Placed Danny Jackson (pitcher) on the 15-day disabled list. Activated Hector Villanueva (catcher) from the 15-day disabled list.