Biography

John Wisniski, Jr. is an American professional wrestler, better known as Greg "The Hammer" Valentine. He is the son of wrestler Johnny Valentine. In the course of his career, which has spanned over four decades, Valentine has held more than 40 championships, including the NWA United States Heavyweight Championship and the WWE Intercontinental Championship. An alumnus of WWE and World Championship Wrestling, he was inducted to the WWE Hall of Fame in 2004.

Known For

WWE Survivor Series 1993

The Blue Knight

WWE: The U.S. Championship: A Legacy of Greatness

Greg 'The Hammer' Valentine (archive footage)

WWE: The History Of The WWE Championship

The Greatest Wrestling Stars of the '80s

Self

WWE: The History Of The Intercontinental Championship

Himself

WWE SuperTape: Volume 5

Greg "The Hammer" Valentine

WWE Royal Rumble 1991

Greg "The Hammer" Valentine

Inside the Steel Cage

Greg "The Hammer" Valentine