Steven John Dunning (born May 15, 1949) is an American former professional baseball player. He played in Major League Baseball as a right-handed pitcher between 1970 and 1977.

On May 11, 1971, Dunning had the distinction of hitting a grand slam home run off of Oakland Athletics pitcher Diego Seguí. This remained the last grand slam hit by an American League pitcher until Félix Hernández of the Seattle Mariners accomplished the same feat June 23, 2008 in a game against the New York Mets.

Cleveland Indians (1970–1973)
Texas Rangers (1973–1974)
California Angels (1976)
Montreal Expos (1976)
Oakland Athletics (1977)

Sent him 2 cards on 1 Dec and got them back signed on 29 Dec

Mr Steve Dunning
5710 Oakleigh Ln
Colleyville, TX 76034