John Wisniski Jr.

🎂 20th September 1951 (74 yrs) 📍 Seattle, Washington, USA

Known For

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.

Movies Featuring John Wisniski Jr.

Midnight Massacre

Midnight Massacre (2025)

as Caepio

Chris Jericho's 30th Anniversary Celebration

Chris Jericho's 30th Anniversary Celebration (2020)

as Greg "The Hammer" Valentine

350 Days

350 Days (2019)

as Self

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

WWE: The U.S. Championship: A Legacy of Greatness (2016)

as Greg 'The Hammer' Valentine (archive footage)

Behind the Ropes: The Greatest Fraternity in the World

Behind the Ropes: The Greatest Fraternity in the World (2015)

as Himself

At What Cost? Anatomy of Professional Wrestling

At What Cost? Anatomy of Professional Wrestling (2015)

as Himself

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

as Himself

WWE: Starrcade - The Essential Collection

WWE: Starrcade - The Essential Collection (2012)

as Himself

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JCW Legends and Icons (2011)

Timeline: The History of WWE – 1985 – As Told By Greg Valentine

Timeline: The History of WWE – 1985 – As Told By Greg Valentine (2011)

as Himself

WWE: The History Of The Intercontinental Championship

WWE: The History Of The Intercontinental Championship (2008)

as Himself

WWE: The History Of The WWE Championship

WWE: The History Of The WWE Championship (2006)

The Greatest Stars of the 80's

The Greatest Stars of the 80's (2005)

as Self

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World Wrestling Legends: 6:05 - The Reunion (2005)

as Greg Valentine

WWE Hall of Fame 2004

WWE Hall of Fame 2004 (2004)

as Self

Heroes of Wrestling

Heroes of Wrestling (1999)

as Greg "The Hammer" Valentine

WCW World War 3 1997

WCW World War 3 1997 (1997)

as Greg "The Hammer" Valentine

WWE Royal Rumble 1994

WWE Royal Rumble 1994 (1994)

as Greg "The Hammer" Valentine

WWE Survivor Series 1993

WWE Survivor Series 1993 (1993)

as The Blue Knight

The Immortal Hulk Hogan

The Immortal Hulk Hogan (1992)

as Greg Valentine

WCW Clash of The Champions XX: 20th Anniversary

WCW Clash of The Champions XX: 20th Anniversary (1992)

as Greg "The Hammer" Valentine

WCW Beach Blast

WCW Beach Blast (1992)

as Greg "The Hammer" Valentine

WCW WrestleWar 1992

WCW WrestleWar 1992 (1992)

as Greg "The Hammer" Valentine

WWE SuperTape: Volume 5

WWE SuperTape: Volume 5 (1992)

as Greg "The Hammer" Valentine

WWE Royal Rumble 1992

WWE Royal Rumble 1992 (1992)

as Greg "The Hammer" Valentine

WWE Rampage '91

WWE Rampage '91 (1991)

as Greg "The Hammer" Valentine

WWE SummerSlam 1991

WWE SummerSlam 1991 (1991)

as Greg "The Hammer" Valentine

WWE WrestleFest '91

WWE WrestleFest '91 (1991)

as Greg "The Hammer" Valentine

WWE U.K. Rampage 1991

WWE U.K. Rampage 1991 (1991)

as Greg "The Hammer" Valentine

WWE Mega Matches

WWE Mega Matches (1991)

as Greg "The Hammer" Valentine

WWE WrestleMania VII

WWE WrestleMania VII (1991)

as Greg "The Hammer" Valentine

WWE Superstars & Stripes Forever: The March to WrestleMania VII

WWE Superstars & Stripes Forever: The March to WrestleMania VII (1991)

as Greg "The Hammer" Valentine

WWE Funniest Moments

WWE Funniest Moments (1991)

as Greg "The Hammer" Valentine

WWE Royal Rumble 1991

WWE Royal Rumble 1991 (1991)

as Greg "The Hammer" Valentine

WWE Survivor Series 1990

WWE Survivor Series 1990 (1990)

as Greg "The Hammer" Valentine

WWE Hottest Matches

WWE Hottest Matches (1990)

as Greg "The Hammer" Valentine

Battle of the WWE Superstars

Battle of the WWE Superstars (1990)

as Greg Valentine

WWE SuperTape: Volume 2

WWE SuperTape: Volume 2 (1990)

as Greg "The Hammer" Valentine

WWF/AJPW/NJPW Wrestling Summit

WWF/AJPW/NJPW Wrestling Summit (1990)

WWE The Ultimate Challenge Special: The March to WrestleMania VI

WWE The Ultimate Challenge Special: The March to WrestleMania VI (1990)

as Greg "The Hammer" Valentine

Wrestling Superheroes

Wrestling Superheroes (1990)

as Greg "The Hammer" Valentine

WWE Royal Rumble 1990

WWE Royal Rumble 1990 (1990)

as Greg "The Hammer" Valentine

WWE Survivor Series 1989

WWE Survivor Series 1989 (1989)

as Greg "The Hammer" Valentine

WWE SummerSlam 1989

WWE SummerSlam 1989 (1989)

as Greg Valentine

Demolition: Witness the Power

Demolition: Witness the Power (1989)

as Greg "The Hammer" Valentine

Fan Favorites

Fan Favorites (1989)

as Greg Valentine

The Best of the WWF: volume 20

The Best of the WWF: volume 20 (1989)

as Greg "The Hammer" Valentine

The Ultimate Warrior

The Ultimate Warrior (1989)

as Greg "The Hammer" Valentine

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WWE Wrestling at The Meadowlands: May '89 (1989)

as Greg "The Hammer" Valentine

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WWE Maple Leaf Wrestling: April '89 (1989)

as Greg "The Hammer" Valentine

WWE WrestleMania V

WWE WrestleMania V (1989)

as Greg "The Hammer" Valentine

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WWE Los Angeles Wrestling: January '89 (1989)

as Greg "The Hammer" Valentine

WWE Royal Rumble 1989

WWE Royal Rumble 1989 (1989)

as Greg "The Hammer" Valentine

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WWE Los Angeles Wrestling: December '88 (1988)

as Greg "The Hammer" Valentine

WWE Survivor Series 1988

WWE Survivor Series 1988 (1988)

as Greg "The Hammer" Valentine

Macho Madness

Macho Madness (1988)

as Greg "The Hammer" Valentine

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WWE U.K. Rampage 1988 (1988)

as Greg "The Hammer" Valentine

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WWE Wrestling at The Meadowlands: September '88 (1988)

as Greg "The Hammer" Valentine

The Best of the WWF: volume 16 Around the World

The Best of the WWF: volume 16 Around the World (1988)

as Greg "The Hammer" Valentine

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WWE Maple Leaf Wrestling: July '88 (1988)

as Greg "The Hammer" Valentine

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WWE Maple Leaf Wrestling: April '88 (1988)

as Greg "The Hammer" Valentine

WWE WrestleMania IV

WWE WrestleMania IV (1988)

as Greg "The Hammer" Valentine

Brutus "The Barber" Beefcake

Brutus "The Barber" Beefcake (1988)

as Greg "The Hammer" Valentine

The Best of the WWF: volume 14

The Best of the WWF: volume 14 (1987)

as Greg "The Hammer" Valentine

Wrestling's Most Embarrassing Moments

Wrestling's Most Embarrassing Moments (1987)

as Greg "The Hammer" Valentine

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WWE Houston Wrestling: December '87 (1987)

as Greg "The Hammer" Valentine

WWE Survivor Series 1987

WWE Survivor Series 1987 (1987)

as Greg Valentine

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WWE Houston Wrestling: October '87 (1987)

as Greg "The Hammer" Valentine

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WWE Maple Leaf Wrestling: June '87 (1987)

as Greg "The Hammer" Valentine

The Best of the WWF: volume 11

The Best of the WWF: volume 11 (1987)

as Greg "The Hammer" Valentine

WWE WrestleMania III

WWE WrestleMania III (1987)

as Greg "The Hammer" Valentine

The Best of the WWF: volume 10

The Best of the WWF: volume 10 (1987)

as Greg "The Hammer" Valentine

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WWE Maple Leaf Wrestling: January '87 (1987)

as Greg "The Hammer" Valentine

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WWE Wrestling at The Meadowlands: January '87 (1987)

as Greg "The Hammer" Valentine

Bob Uecker's Wacky World of Sports

Bob Uecker's Wacky World of Sports (1987)

as Greg "The Hammer" Valentine

Inside the Steel Cage

Inside the Steel Cage (1986)

as Greg "The Hammer" Valentine

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WWE Houston Wrestling: October '86 (1986)

as Greg "The Hammer" Valentine

The British Bulldogs

The British Bulldogs (1986)

as Greg Valentine

The Best of the WWF: volume 9

The Best of the WWF: volume 9 (1986)

as Greg "The Hammer" Valentine

WWE The Big Event

WWE The Big Event (1986)

as Greg "The Hammer" Valentine

The Best of the WWF: volume 7

The Best of the WWF: volume 7 (1986)

as Greg "The Hammer" Valentine

Ricky "The Dragon" Steamboat

Ricky "The Dragon" Steamboat (1986)

as Greg "The Hammer" Valentine

WrestleMania II

WrestleMania II (1986)

as Greg "The Hammer" Valentine

WWE Grudge Match

WWE Grudge Match (1986)

as Greg "The Hammer" Valentine

Tag Team Champions

Tag Team Champions (1986)

as Greg Valentine

The Best of the WWF: volume 5

The Best of the WWF: volume 5 (1986)

as Greg "The Hammer" Valentine

The WWF's Amazing Managers

The WWF's Amazing Managers (1985)

as Greg 'The Hammer' Valentine

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WWE Maple Leaf Wrestling: October '85 (1985)

as Greg "The Hammer" Valentine

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WWE Maple Leaf Wrestling: September '85 (1985)

as Greg "The Hammer" Valentine

The Best of the WWF: volume 4

The Best of the WWF: volume 4 (1985)

as Greg "The Hammer" Valentine

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WWE Maple Leaf Wrestling: April '85 (1985)

as Greg "The Hammer" Valentine

WrestleMania

WrestleMania (1985)

as Greg "The Hammer" Valentine

Most Unusual Matches

Most Unusual Matches (1985)

as Greg "The Hammer" Valentine

WWF Hulkamania 1

WWF Hulkamania 1 (1985)

as Greg Valentine

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WWE Maple Leaf Wrestling: October '84 (1984)

as Greg "The Hammer" Valentine

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WWE Maple Leaf Wrestling: September '84 (1984)

as Greg "The Hammer" Valentine

WWE The Brawl to End it All

WWE The Brawl to End it All (1984)

as Greg "The Hammer" Valentine

NWA Boogie Jam

NWA Boogie Jam (1984)

as Greg Valentine

NWA Starrcade 1983

NWA Starrcade 1983 (1983)

as Greg "The Hammer" Valentine

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NWA The Race to Starrcade (1983)

as Greg Valentine

NWA The Final Conflict

NWA The Final Conflict (1983)

as Greg Valentine

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NWA Sam Muchnick Retirement Show (1982)

as Greg Valentine

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WWE Maple Leaf Wrestling: December '85 (N/A)

as Greg "The Hammer" Valentine