In 2004 the whole Boston Red Sox team received the Sportsman of the Year Award.
Muhammad Ali won the Sports Illustrated Sportsman of the Year Award once, in 1974.
Brett Favre did of course!
1969 - Denny McLain
1971 Lee Trevino Golf PGA Player of the Year
1977 Steve Cauthen Horse racing Eclipse Award for Outstanding Jockey
1970 Bobby Orr Hockey NHL MVP
1964 Ken Venturi Golf U.S. Open Champion
1974 Muhammad Ali Boxing World heavyweight champion
1975 Pete Rose Baseball World Series MVP