John Wisniski Jr.

John Wisniski Jr.

Acting

Born September 20, 1951 · Seattle, Washington, USA

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 fo…

Known for

All Elite Wrestling: Dynamite

All Elite Wrestling: Dynamite

2019

Raw

Raw

1993

Tuesday Night Titans

Tuesday Night Titans

1984

Tuesday Night Titans

Tuesday Night Titans

1984

WWF Superstars

WWF Superstars

1986

WWE Saturday Night's Main Event

WWE Saturday Night's Main Event

1985

WWE Saturday Night's Main Event

WWE Saturday Night's Main Event

1985

WWE Saturday Night's Main Event

WWE Saturday Night's Main Event

1985

Acting(119)

2025Midnight MassacreCaepio

2021Biography: WWE LegendsGreg "The Hammer" Valentine

2021WWE's Most Wanted TreasuresGreg "The Hammer" Valentine

2020Chris Jericho's 30th Anniversary CelebrationGreg "The Hammer" Valentine

2020Undertaker: The Last RideGreg Valentine (archive footage)

2019All Elite Wrestling: DynamiteGreg Valentine

2019350 DaysSelf

2019HeadstrongSelf

2016WWE: The U.S. Championship: A Legacy of GreatnessGreg 'The Hammer' Valentine (archive footage)

2015Behind the Ropes: The Greatest Fraternity in the WorldHimself

2015At What Cost? Anatomy of Professional WrestlingHimself

2014WWE: 150 Best Pay-Per-View Matches, Vol 1Himself

2012WWE: Starrcade - The Essential CollectionHimself

2011JCW Legends and Icons

2011Timeline The History of WWE – 1985 – As Told By Greg ValentineHimself

2008WWE: The History Of The Intercontinental ChampionshipHimself

2006WWE: The History Of The WWE Championship

2005The Greatest Wrestling Stars of the '80sSelf

2005World Wrestling Legends: 6:05 - The ReunionGreg Valentine

2004WWE Hall of Fame 2004Self

1999Heroes of WrestlingGreg "The Hammer" Valentine

1997WCW World War 3 1997Greg "The Hammer" Valentine

1995AWF Warriors of WrestlingGreg "The Hammer" Valentine

1994WWE Royal Rumble 1994Greg "The Hammer" Valentine

1993WWE Survivor Series 1993The Blue Knight

1993RawGreg "The Hammer" Valentine

1992The Immortal Hulk HoganGreg Valentine

1992WCW Clash of The Champions XX: 20th AnniversaryGreg "The Hammer" Valentine

1992WCW Beach BlastGreg "The Hammer" Valentine

1992WCW WrestleWar 1992Greg "The Hammer" Valentine

1992WWE SuperTape: Volume 5Greg "The Hammer" Valentine

1992WWE Royal Rumble 1992Greg "The Hammer" Valentine

1991WWE Rampage '91Greg "The Hammer" Valentine

1991WWE SummerSlam 1991Greg "The Hammer" Valentine

1991WWE WrestleFest '91Greg "The Hammer" Valentine

1991WWE U.K. Rampage 1991Greg "The Hammer" Valentine

1991WWE Mega MatchesGreg "The Hammer" Valentine

1991WWE WrestleMania VIIGreg "The Hammer" Valentine

1991WWE Superstars & Stripes Forever: The March to WrestleMania VIIGreg "The Hammer" Valentine

1991WWE Funniest MomentsGreg "The Hammer" Valentine

1991WWE Royal Rumble 1991Greg "The Hammer" Valentine

1990WWE Survivor Series 1990Greg "The Hammer" Valentine

1990WWE Hottest MatchesGreg "The Hammer" Valentine

1990Battle of the WWE SuperstarsGreg Valentine

1990WWE SuperTape: Volume 2Greg "The Hammer" Valentine

1990WWF/AJPW/NJPW Wrestling Summit

1990WWE The Ultimate Challenge Special: The March to WrestleMania VIGreg "The Hammer" Valentine

1990Wrestling SuperheroesGreg "The Hammer" Valentine

1990WWE Royal Rumble 1990Greg "The Hammer" Valentine

1989WWE Survivor Series 1989Greg "The Hammer" Valentine

1989WWE SummerSlam 1989Greg Valentine

1989Demolition: Witness the PowerGreg "The Hammer" Valentine

1989Fan FavoritesGreg Valentine

1989The Best of the WWF: volume 20Greg "The Hammer" Valentine

1989The Ultimate WarriorGreg "The Hammer" Valentine

1989WWE Wrestling at The Meadowlands: May '89Greg "The Hammer" Valentine

1989WWE Maple Leaf Wrestling: April '89Greg "The Hammer" Valentine

1989WWE WrestleMania VGreg "The Hammer" Valentine

1989WWE Los Angeles Wrestling: January '89Greg "The Hammer" Valentine

1989WWE Royal Rumble 1989Greg "The Hammer" Valentine

1988WWE Los Angeles Wrestling: December '88Greg "The Hammer" Valentine

1988WWE Survivor Series 1988Greg "The Hammer" Valentine

1988Macho MadnessGreg "The Hammer" Valentine

1988WWE U.K. Rampage 1988Greg "The Hammer" Valentine

1988WWE Wrestling at The Meadowlands: September '88Greg "The Hammer" Valentine

1988The Best of the WWF: volume 16 Around the WorldGreg "The Hammer" Valentine

1988WWE Maple Leaf Wrestling: July '88Greg "The Hammer" Valentine

1988WWE Maple Leaf Wrestling: April '88Greg "The Hammer" Valentine

1988WWE WrestleMania IVGreg "The Hammer" Valentine

1988Clash of the ChampionsGreg "The Hammer" Valentine

1988Brutus "The Barber" BeefcakeGreg "The Hammer" Valentine

1987The Best of the WWF: volume 14Greg "The Hammer" Valentine

1987Wrestling's Most Embarrassing MomentsGreg "The Hammer" Valentine

1987WWE Houston Wrestling: December '87Greg "The Hammer" Valentine

1987WWE Survivor Series 1987Greg Valentine

1987WWE Houston Wrestling: October '87Greg "The Hammer" Valentine

1987WWE Maple Leaf Wrestling: June '87Greg "The Hammer" Valentine

1987The Best of the WWF: volume 11Greg "The Hammer" Valentine

1987WWE WrestleMania IIIGreg "The Hammer" Valentine

1987The Best of the WWF: volume 10Greg "The Hammer" Valentine

1987WWE Maple Leaf Wrestling: January '87Greg "The Hammer" Valentine

1987WWE Wrestling at The Meadowlands: January '87Greg "The Hammer" Valentine

1987Bob Uecker's Wacky World of SportsGreg "The Hammer" Valentine

1986Inside the Steel CageGreg "The Hammer" Valentine

1986WWE Houston Wrestling: October '86Greg "The Hammer" Valentine

1986The British BulldogsGreg Valentine

1986The Best of the WWF: volume 9Greg "The Hammer" Valentine

1986WWF Wrestling ChallengeGreg Valentine

1986WWF SuperstarsGreg "The Hammer" Valentine

1986WWE The Big EventGreg "The Hammer" Valentine

1986The Best of the WWF: volume 7Greg "The Hammer" Valentine

1986Ricky "The Dragon" SteamboatGreg "The Hammer" Valentine

1986WrestleMania IIGreg "The Hammer" Valentine

1986WWE Grudge MatchGreg "The Hammer" Valentine

1986Tag Team ChampionsGreg Valentine

1986The Best of the WWF: volume 5Greg "The Hammer" Valentine

1985The WWF's Amazing ManagersGreg 'The Hammer' Valentine

1985WWE Maple Leaf Wrestling: December '85Greg "The Hammer" Valentine

1985WWE Maple Leaf Wrestling: October '85Greg "The Hammer" Valentine

1985WWE Maple Leaf Wrestling: September '85Greg "The Hammer" Valentine

1985The Best of the WWF: volume 4Greg "The Hammer" Valentine

1985WWE Saturday Night's Main EventGreg Valentine

1985WWE Maple Leaf Wrestling: April '85Greg "The Hammer" Valentine

1985WrestleManiaGreg "The Hammer" Valentine

1985Most Unusual MatchesGreg "The Hammer" Valentine

1985WWF Hulkamania 1Greg Valentine

1984WWE Maple Leaf Wrestling: October '84Greg "The Hammer" Valentine

1984WWE Maple Leaf Wrestling: September '84Greg "The Hammer" Valentine

1984WWE The Brawl to End it AllGreg "The Hammer" Valentine

1984Tuesday Night TitansGreg "The Hammer" Valentine

1984NWA Boogie JamGreg Valentine

1983NWA Starrcade 1983Greg "The Hammer" Valentine

1983WCW Arena ShowsGreg Valentine

1983NWA The Race to StarrcadeGreg Valentine

1983NWA The Final ConflictGreg Valentine

1982NWA Sam Muchnick Retirement ShowGreg Valentine

1981Mid-Atlantic Championship WrestlingGreg Valentine

1975WWF All-Star WrestlingGreg Valentine

1973WWE Old SchoolGreg Valentine