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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.
Raw
Greg "The Hammer" Valentine · 1993 · ★ 6.8
WWF Wrestling Challenge
Greg Valentine · 1986 · ★ 6.8
WWF Wrestling Challenge
Greg "The Hammer" Valentine · 1986 · ★ 6.8
All Elite Wrestling: Dynamite
Greg Valentine · 2019 · ★ 7.9
WWF Superstars
Greg "The Hammer" Valentine · 1986 · ★ 7.2
WWE Saturday Night's Main Event
Greg Valentine · 1985 · ★ 8.3
WWE Saturday Night's Main Event
· 1985 · ★ 8.3
WWE Saturday Night's Main Event
Greg "The Hammer" Valentine · 1985 · ★ 8.3
WWF All-Star Wrestling
Greg Valentine · 1975
WWF All-Star Wrestling
Greg 'The Hammer' Valentine · 1975
WWE Old School
Greg Valentine · 1973
WWE Old School
Greg "The Hammer" Valentine · 1973
Mid-Atlantic Championship Wrestling
Greg Valentine · 1981
Clash of the Champions
Greg "The Hammer" Valentine · 1988
Biography: WWE Legends
Greg "The Hammer" Valentine · 2021 · ★ 7.4
Undertaker: The Last Ride
Greg Valentine (archive footage) · 2020 · ★ 7.4
WWE's Most Wanted Treasures
Greg "The Hammer" Valentine · 2021 · ★ 8.6
WCW Arena Shows
Greg Valentine · 1983
WWE Survivor Series 1993
The Blue Knight · 1993 · ★ 6.2
WWE: The History Of The WWE Championship
· 2006 · ★ 10.0
WWE: The U.S. Championship: A Legacy of Greatness
Greg 'The Hammer' Valentine (archive footage) · 2016 · ★ 9.2
AWF Warriors of Wrestling
Greg "The Hammer" Valentine · 1995
The Greatest Wrestling Stars of the '80s
Self · 2005 · ★ 7.8
WWE: The History Of The Intercontinental Championship
Himself · 2008 · ★ 7.3
WWE SuperTape: Volume 5
Greg "The Hammer" Valentine · 1992
Inside the Steel Cage
Greg "The Hammer" Valentine · 1986
WWE Survivor Series 1987
Greg Valentine · 1987 · ★ 8.4
WWE SuperTape: Volume 2
Greg "The Hammer" Valentine · 1990
WWE Survivor Series 1988
Greg "The Hammer" Valentine · 1988 · ★ 8.0
WWE Royal Rumble 1992
Greg "The Hammer" Valentine · 1992 · ★ 6.9
