John Wisniski Jr.
View on IMDb ↗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
At What Cost? Anatomy of Professional Wrestling
WWE: The History Of The WWE Championship
Wrestling's Most Embarrassing Moments
Ricky "The Dragon" Steamboat
WWE The Brawl to End it All
WWE: The U.S. Championship: A Legacy of Greatness
Most Unusual Matches
Tuesday Night Titans
WWE's Most Wanted Treasures
WWE Survivor Series 1987Filmography (120)
- 2025
Midnight MassacreCaepio - 2021
WWE's Most Wanted TreasuresGreg "The Hammer" Valentine - 2021
Biography: WWE LegendsGreg "The Hammer" Valentine - 2020
Undertaker: The Last RideGreg Valentine (archive footage) - 2020
Chris Jericho's 30th Anniversary CelebrationGreg "The Hammer" Valentine - 2019
All Elite Wrestling: DynamiteGreg Valentine - 2019
HeadstrongSelf - 2019
350 DaysSelf - 2016
WWE: The U.S. Championship: A Legacy of GreatnessGreg 'The Hammer' Valentine (archive footage) - 2015
At What Cost? Anatomy of Professional WrestlingHimself - 2015
Behind the Ropes: The Greatest Fraternity in the WorldHimself - 2014WWE: 150 Best Pay-Per-View Matches, Vol 1Himself
- 2012
WWE: Starrcade - The Essential CollectionHimself - 2011
Timeline The History of WWE – 1985 – As Told By Greg ValentineHimself - 2011JCW Legends and Icons
- 2008
WWE: The History Of The Intercontinental ChampionshipHimself - 2006
WWE: The History Of The WWE Championship - 2005
The Greatest Wrestling Stars of the '80sSelf - 2005World Wrestling Legends: 6:05 - The ReunionGreg Valentine
- 2004
WWE Hall of Fame 2004Self - 1999
Heroes of WrestlingGreg "The Hammer" Valentine - 1997
WCW World War 3 1997Greg "The Hammer" Valentine - 1995AWF Warriors of WrestlingGreg "The Hammer" Valentine
- 1994
WWE Royal Rumble 1994Greg "The Hammer" Valentine - 1993
WWE Survivor Series 1993The Blue Knight - 1993
RawGreg "The Hammer" Valentine - 1992
WCW Beach BlastGreg "The Hammer" Valentine - 1992
WWE Royal Rumble 1992Greg "The Hammer" Valentine - 1992
WCW WrestleWar 1992Greg "The Hammer" Valentine - 1992
WWE SuperTape: Volume 5Greg "The Hammer" Valentine - 1992
WCW Clash of The Champions XX: 20th AnniversaryGreg "The Hammer" Valentine - 1992
The Immortal Hulk HoganGreg Valentine - 1991
WWE SummerSlam 1991Greg "The Hammer" Valentine - 1991
WWE WrestleMania VIIGreg "The Hammer" Valentine - 1991
WWE Royal Rumble 1991Greg "The Hammer" Valentine - 1991
WWE U.K. Rampage 1991Greg "The Hammer" Valentine - 1991
WWE WrestleFest '91Greg "The Hammer" Valentine - 1991
WWE Mega MatchesGreg "The Hammer" Valentine - 1991
WWE Rampage '91Greg "The Hammer" Valentine - 1991
WWE Superstars & Stripes Forever: The March to WrestleMania VIIGreg "The Hammer" Valentine - 1991
WWE Funniest MomentsGreg "The Hammer" Valentine - 1990
WWE Survivor Series 1990Greg "The Hammer" Valentine - 1990
WWE Royal Rumble 1990Greg "The Hammer" Valentine - 1990
Battle of the WWE SuperstarsGreg Valentine - 1990
WWE Hottest MatchesGreg "The Hammer" Valentine - 1990
WWE SuperTape: Volume 2Greg "The Hammer" Valentine - 1990
WWF/AJPW/NJPW Wrestling Summit - 1990
WWE The Ultimate Challenge Special: The March to WrestleMania VIGreg "The Hammer" Valentine - 1990
Wrestling SuperheroesGreg "The Hammer" Valentine - 1989
WWE Survivor Series 1989Greg "The Hammer" Valentine - 1989
WWE WrestleMania VGreg "The Hammer" Valentine - 1989
WWE SummerSlam 1989Greg Valentine - 1989
WWE Royal Rumble 1989Greg "The Hammer" Valentine - 1989
Demolition: Witness the PowerGreg "The Hammer" Valentine - 1989
The Ultimate WarriorGreg "The Hammer" Valentine - 1989
Fan FavoritesGreg Valentine - 1989
The Best of the WWF: volume 20Greg "The Hammer" Valentine - 1989WWE Maple Leaf Wrestling: April '89Greg "The Hammer" Valentine
- 1989WWE Los Angeles Wrestling: January '89Greg "The Hammer" Valentine
- 1989WWE Wrestling at The Meadowlands: May '89Greg "The Hammer" Valentine
- 1988
WWE Survivor Series 1988Greg "The Hammer" Valentine - 1988
WWE WrestleMania IVGreg "The Hammer" Valentine - 1988
The Best of the WWF: volume 16 Around the WorldGreg "The Hammer" Valentine - 1988WWE U.K. Rampage 1988Greg "The Hammer" Valentine
- 1988WWE Los Angeles Wrestling: December '88Greg "The Hammer" Valentine
- 1988WWE Maple Leaf Wrestling: April '88Greg "The Hammer" Valentine
- 1988WWE Maple Leaf Wrestling: July '88Greg "The Hammer" Valentine
- 1988WWE Wrestling at The Meadowlands: September '88Greg "The Hammer" Valentine
- 1988
Macho MadnessGreg "The Hammer" Valentine - 1988
Brutus "The Barber" BeefcakeGreg "The Hammer" Valentine - 1988
Clash of the ChampionsGreg "The Hammer" Valentine - 1987
Wrestling's Most Embarrassing MomentsGreg "The Hammer" Valentine - 1987
WWE Survivor Series 1987Greg Valentine - 1987
WWE WrestleMania IIIGreg "The Hammer" Valentine - 1987
Bob Uecker's Wacky World of SportsGreg "The Hammer" Valentine - 1987
The Best of the WWF: volume 10Greg "The Hammer" Valentine - 1987
The Best of the WWF: volume 11Greg "The Hammer" Valentine - 1987
The Best of the WWF: volume 14Greg "The Hammer" Valentine - 1987WWE Houston Wrestling: October '87Greg "The Hammer" Valentine
- 1987WWE Houston Wrestling: December '87Greg "The Hammer" Valentine
- 1987WWE Maple Leaf Wrestling: January '87Greg "The Hammer" Valentine
- 1987WWE Maple Leaf Wrestling: June '87Greg "The Hammer" Valentine
- 1987WWE Wrestling at The Meadowlands: January '87Greg "The Hammer" Valentine
- 1986
Ricky "The Dragon" SteamboatGreg "The Hammer" Valentine - 1986
WWE The Big EventGreg "The Hammer" Valentine - 1986
WWF SuperstarsGreg "The Hammer" Valentine - 1986
WWF Wrestling ChallengeGreg Valentine - 1986
WrestleMania IIGreg "The Hammer" Valentine - 1986
The British BulldogsGreg Valentine - 1986
The Best of the WWF: volume 5Greg "The Hammer" Valentine - 1986
The Best of the WWF: volume 7Greg "The Hammer" Valentine - 1986
The Best of the WWF: volume 9Greg "The Hammer" Valentine - 1986WWE Houston Wrestling: October '86Greg "The Hammer" Valentine
- 1986
Tag Team ChampionsGreg Valentine - 1986
Inside the Steel CageGreg "The Hammer" Valentine - 1986
WWE Grudge MatchGreg "The Hammer" Valentine - 1985
Most Unusual MatchesGreg "The Hammer" Valentine - 1985
WWE Saturday Night's Main EventGreg Valentine - 1985
WrestleManiaGreg "The Hammer" Valentine - 1985
The Best of the WWF: volume 4Greg "The Hammer" Valentine - 1985
WWF Hulkamania 1Greg Valentine - 1985WWE Maple Leaf Wrestling: April '85Greg "The Hammer" Valentine
- 1985WWE Maple Leaf Wrestling: September '85Greg "The Hammer" Valentine
- 1985WWE Maple Leaf Wrestling: October '85Greg "The Hammer" Valentine
- 1985WWE Maple Leaf Wrestling: December '85Greg "The Hammer" Valentine
- 1985
The WWF's Amazing ManagersGreg 'The Hammer' Valentine - 1985
WWE Pay Per View - 1984
WWE The Brawl to End it AllGreg "The Hammer" Valentine - 1984
Tuesday Night TitansGreg "The Hammer" Valentine - 1984WWE Maple Leaf Wrestling: September '84Greg "The Hammer" Valentine
- 1984WWE Maple Leaf Wrestling: October '84Greg "The Hammer" Valentine
- 1984
NWA Boogie JamGreg Valentine - 1983
NWA Starrcade 1983Greg "The Hammer" Valentine - 1983
NWA The Final ConflictGreg Valentine - 1983NWA The Race to StarrcadeGreg Valentine
- 1983
WCW Arena ShowsGreg Valentine - 1982NWA Sam Muchnick Retirement ShowGreg Valentine
- 1981
Mid-Atlantic Championship WrestlingGreg Valentine - 1975
WWF All-Star WrestlingGreg Valentine - 1973
WWE Old SchoolGreg Valentine