BASEBALL (NL) * League -- Suspended Kevin Mitchell (San Francisco Giants outfielder) for two games and fined him an undisclosed amount for charging the mound in a game April 10.
* Atlanta Braves -- Optioned Paul Marak (pitcher) to Richmond of the International League. Purchased the contract of Jerry Willard (catcher) from Richmond.
* Pittsburgh Pirates -- Placed Bob Walk (pitcher) on the 15-day disabled list. Recalled Orlando Merced (first baseman) from Buffalo of the American Association.
FOOTBALL (NFL) * Cleveland Browns -- Signed Darryl Sims (defensive lineman).
* Detroit Lions -- Signed Don Overton (running back).
* Los Angeles Rams -- Signed Stacey Bailey (wide receiver).
* New Orleans Saints -- Signed Vaughan Johnson (linebacker) to a four-year contract, and Jim Wilks (defensive lineman) and Hoby Brenner (tight end) to two-years contracts.
* Phoenix Cardinals -- Released J.T. Smith (wide receiver).
HOCKEY (NHL) * Buffalo Sabres -- Sent Kevin Haller and Ken Sutton (defensemen), Darren Shannon (forward) and Darcy Wakaluk (goaltender) to Rochester of the American Hockey League.
* New York Rangers -- Sent Corey Millen (center) and Steven Rice (right wing) to Binghamton of the AHL.
* Vancouver Canucks -- Signed Pat Quinn (president and general manager) to a four-year contract. Sent Garry Valk (right wing) to Milwaukee of the International Hockey League.
COLLEGE * Notre Dame -- Announced the retirement of Digger Phelps (men's basketball coach).