Orioles -- Signed No. 1 draft pick P Jay Powell to a minor-league contract for a bonus of about $450,000.
Boston Red Sox -- Placed C Bob Melvin on the 15-day DL. Recalled C John Flaherty from Triple-A Pawtucket.
Cleveland Indians -- Recalled P Albie Lopez from Double-A Canton-Akron. Placed P Mark Clark on the 15-day DL, retroactive to Friday.
Florida Marlins -- Activated IF Chuck Carr from the 15-day DL. Sent P Kurt Miller and OF Carl Everett to Triple-A Edmonton.
Los Angeles Dodgers -- Placed 3B Tim Wallach on the 15-day DL with a fractured rib. Recalled OF Raul Mondesi from Triple-A Albuquerque.
Milwaukee Brewers -- Placed IF Bill Doran on the 15-day DL. Activated SS Pat Listach from the 15-day DL.
Montreal Expos -- Activated P Ken Hill from the 15-day DL.
Oakland Athletics -- Activated IF Jerry Browne from the 15-day DL. Designated 3B Kevin Seitzer forassignment.
Pittsburgh Pirates -- Sent P Tony Menendez to Triple-A Buffalo. Recalled IF John Wehner from Buffalo.
San Diego Padres -- Traded 1B Fred McGriff to the Atlanta Braves for OF Melvin Nieves, OF Vince Moore and P Donnie Elliott. Assigned Nieves and Elliott to Triple-A Las Vegas and Single-A Rancho Cucamonga. Recalled 1B Guillermo Velasquez from Las Vegas.
Texas Rangers -- Optioned P Todd Burns to Triple-A Oklahoma City.
Green Bay Packers -- Signed LB Johnny Holland to a one-year contract.
Miami Dolphins -- Signed first-round draft pick WR-KR O. J. McDuffie to a four-year contract reportedly worth $2.76 million, including a $1 million signing bonus.
San Diego Chargers -- Signed RB Natrone Means.
San Francisco 49ers -- Signed RB Harry Sydney. Waived RB Jay Hillman.
Washington Redskins -- Waived RB Greg Manior and TE Alan Cross. Waived LB Ted Rogers.