Keith Hernandez, the co-MVP of the 1979 season with the World Series Champion Pittsburgh Pirates. Keith also was the captain and hero the 1986 World Series Champion New York Mets
The Baseball Hall of Famers' players who wore Number 7 were Freddie Lindstrom of the New York Giants, Mickey Mantle of the New York Yankees, Philadelphia's Al Simmons and Joe Medwick.
Only 1 ... Jackie Robinson of the Brooklyn Dodgers.
Baseball Hall of Famers that wore #17 are P Dizzy Dean and CF Cool Papa Bell.
Hall of Famers Frank Gifford, Joe Montana, and George Blanda.
Melky wore number 39 in 2005, then he wore number 28 from 2006-2008. Then in his last season with the Yankees he wore number 53. Melky was then traded in the off season to the Atlanta Braves for Javier Vazquez.
There has been no player that wore #10 for the Steelers and made it into the NFL Hall of Fame.
Hall of Famer Jackie Robinson wore #42 for the Brooklyn Dodgers between 1947-1956.
billy Williams Hall of famer from the Chicago Cubs
Dave Concepcion, for the Reds, is in the hall and wore 13. Doyle Alexander, who pitched for several teams in the 70s and 80s, wore #13. Currently, Alex Rodriguez of the Yankees wears #13. Currently, Robert Fick of the Washington Nationals wears #13.
Hall of Famer Dick Butkus wore #51.
One is Paul Hornung of the Green Bay Packers inducted in 1986 to the Pro Football Hall of Fame. Also George McAfee of the Chicago Bears (1966) not sure of any others. MLB Hall of Famers Johnny Bench, George Brett, Lou Boudreau, Joe DiMaggio, Hank Greenberg, Travis Jackson, and Brooks Robinson all wore #5. Bill Barilko (Toronto Maple Leafs)
Mel Ott wore number 4 for the New York Giants baseball team. His number was retired in 1948.
Hall of Fame defensive tackle Bob Lilly wore #74 from 1961 to 1974 for the Cowboys.