Baltimore -- Optioned right-hander Don Welchel to Rochester of International League.
California -- Signed pitcher Mike Marshall to a Triple-A contract.
Cincinnati -- Acquired reliever Bob Tufts from Omaha of the American Association for pitcher Charlie Leibrandt of Indianapolis of the American Association; called up pitcher Keefe Cato from Indianapolis.
Philadelphia -- Placed pitcher Larry Christenson on the 21-day disabled list; recalled pitcher Porfi Altamirano from Portland of the Pacific Coast League.
Boston -- Named K.C. Jones coach and Jimmy Rodgers assistant coach and signed both to multi-year contracts.
Delta State -- Named Ed Murphy basketball coach.
Denver -- Signed safety Steve Foley to a series of 1-year contracts; signed four free agents: kickers Fred Brock and Steven Tobin and punters Calvin Murrasy and Jay Kroeker.
St. Louis -- Signed safety Bob Harris of Auburn and wide recvevers Aaron Williams of Washington and Ken Blair, a free agent.