John Wisniski Jr.
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
- Acting
- Born
- 1951-09-20 · Seattle, Washington, USA
Known for
- Raw (1993) — Greg "The Hammer" Valentine
- Undertaker: The Last Ride (2020) — Greg Valentine (archive footage)
- All Elite Wrestling: Dynamite (2019) — Greg Valentine
- WrestleMania (1985) — Greg "The Hammer" Valentine
- WWE WrestleMania III (1987) — Greg "The Hammer" Valentine
- WWE Saturday Night's Main Event (1985) — Greg Valentine
- WrestleMania II (1986) — Greg "The Hammer" Valentine
- WWE WrestleMania V (1989) — Greg "The Hammer" Valentine
- WWE WrestleMania IV (1988) — Greg "The Hammer" Valentine
- WWE WrestleMania VII (1991) — Greg "The Hammer" Valentine
- Biography: WWE Legends (2021) — Greg "The Hammer" Valentine
- WWE Survivor Series 1987 (1987) — Greg Valentine
- WWE Royal Rumble 1992 (1992) — Greg "The Hammer" Valentine
- WWE Royal Rumble 1994 (1994) — Greg "The Hammer" Valentine
- WWE Survivor Series 1990 (1990) — Greg "The Hammer" Valentine
- WWE Survivor Series 1988 (1988) — Greg "The Hammer" Valentine