Baseball

Oakland Athletics -- Activated 1B Mark McGwire from the 15-day DL. Optioned C Scott Hemond to Triple-A Tacoma.

New York Mets -- Signed P Bill Santamaria and OF-1B Terrence Long.

San Diego Padres -- Signed P Dustin Hermanson. Recalled P Mike Campbell from Triple-A Las Vegas. Designated IF Keith Lockhart for assignment.

Football

Minnesota Vikings -- Signed DE Roy Barker and DE James Harris, S Lamar McGriggs, DT Esera Tuaolo, CB Harlan Davis and TE Andrew Jordan. Waived WR Ronnie West.

New Orleans Saints -- Agreed to terms with WR Eric Martin on a one-year contract.