John Wisniski Jr.

Acting

September 20, 1951Seattle, 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 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

Raw

Raw

1993

Undertaker: The Last Ride

Undertaker: The Last Ride

2020

All Elite Wrestling: Dynamite

All Elite Wrestling: Dynamite

2019

WrestleMania

WrestleMania

1985

WWE Saturday Night's Main Event

WWE Saturday Night's Main Event

1985

WWE WrestleMania III

WWE WrestleMania III

1987

WrestleMania II

WrestleMania II

1986

WWE WrestleMania V

WWE WrestleMania V

1989

WWE WrestleMania IV

WWE WrestleMania IV

1988

WWE WrestleMania VII

WWE WrestleMania VII

1991

Acting120

Midnight Massacre

Midnight Massacre

2025

Caepio

Biography: WWE Legends

Biography: WWE Legends

2021

Greg "The Hammer" Valentine

WWE's Most Wanted Treasures

WWE's Most Wanted Treasures

2021

Greg "The Hammer" Valentine

Chris Jericho's 30th Anniversary Celebration

Chris Jericho's 30th Anniversary Celebration

2020

Greg "The Hammer" Valentine

Undertaker: The Last Ride

Undertaker: The Last Ride

2020

Greg Valentine (archive footage)

All Elite Wrestling: Dynamite

All Elite Wrestling: Dynamite

2019

Greg Valentine

350 Days

350 Days

2019

Self

Headstrong

Headstrong

2019

Self

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

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

2016

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

Himself

At What Cost? Anatomy of Professional Wrestling

At What Cost? Anatomy of Professional Wrestling

2015

Himself

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

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

2014

Himself

WWE: Starrcade - The Essential Collection

WWE: Starrcade - The Essential Collection

2012

Himself

JCW Legends and Icons

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

Himself

WWE: The History Of The Intercontinental Championship

WWE: The History Of The Intercontinental Championship

2008

Himself

WWE: The History Of The WWE Championship

WWE: The History Of The WWE Championship

2006

The Greatest Wrestling Stars of the '80s

The Greatest Wrestling Stars of the '80s

2005

Self

World Wrestling Legends: 6:05 - The Reunion

World Wrestling Legends: 6:05 - The Reunion

2005

Greg Valentine

WWE Hall of Fame 2004

WWE Hall of Fame 2004

2004

Self

Heroes of Wrestling

Heroes of Wrestling

1999

Greg "The Hammer" Valentine

WCW World War 3 1997

WCW World War 3 1997

1997

Greg "The Hammer" Valentine

AWF Warriors of Wrestling

AWF Warriors of Wrestling

1995

Greg "The Hammer" Valentine

WWE Royal Rumble 1994

WWE Royal Rumble 1994

1994

Greg "The Hammer" Valentine

WWE Survivor Series 1993

WWE Survivor Series 1993

1993

The Blue Knight

Raw

Raw

1993

Greg "The Hammer" Valentine

The Immortal Hulk Hogan

The Immortal Hulk Hogan

1992

Greg Valentine

WCW Clash of The Champions XX: 20th Anniversary

WCW Clash of The Champions XX: 20th Anniversary

1992

Greg "The Hammer" Valentine

WCW Beach Blast

WCW Beach Blast

1992

Greg "The Hammer" Valentine

WCW WrestleWar 1992

WCW WrestleWar 1992

1992

Greg "The Hammer" Valentine

WWE SuperTape: Volume 5

WWE SuperTape: Volume 5

1992

Greg "The Hammer" Valentine

WWE Royal Rumble 1992

WWE Royal Rumble 1992

1992

Greg "The Hammer" Valentine

WWE Rampage '91

WWE Rampage '91

1991

Greg "The Hammer" Valentine

WWE SummerSlam 1991

WWE SummerSlam 1991

1991

Greg "The Hammer" Valentine

WWE WrestleFest '91

WWE WrestleFest '91

1991

Greg "The Hammer" Valentine

WWE U.K. Rampage 1991

WWE U.K. Rampage 1991

1991

Greg "The Hammer" Valentine

WWE Mega Matches

WWE Mega Matches

1991

Greg "The Hammer" Valentine

WWE WrestleMania VII

WWE WrestleMania VII

1991

Greg "The Hammer" Valentine

WWE Superstars & Stripes Forever: The March to WrestleMania VII

WWE Superstars & Stripes Forever: The March to WrestleMania VII

1991

Greg "The Hammer" Valentine

WWE Funniest Moments

WWE Funniest Moments

1991

Greg "The Hammer" Valentine

WWE Royal Rumble 1991

WWE Royal Rumble 1991

1991

Greg "The Hammer" Valentine

WWE Survivor Series 1990

WWE Survivor Series 1990

1990

Greg "The Hammer" Valentine

WWE Hottest Matches

WWE Hottest Matches

1990

Greg "The Hammer" Valentine

Battle of the WWE Superstars

Battle of the WWE Superstars

1990

Greg Valentine

WWE SuperTape: Volume 2

WWE SuperTape: Volume 2

1990

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

Greg "The Hammer" Valentine

Wrestling Superheroes

Wrestling Superheroes

1990

Greg "The Hammer" Valentine

WWE Royal Rumble 1990

WWE Royal Rumble 1990

1990

Greg "The Hammer" Valentine

WWE Survivor Series 1989

WWE Survivor Series 1989

1989

Greg "The Hammer" Valentine

WWE SummerSlam 1989

WWE SummerSlam 1989

1989

Greg Valentine

Demolition: Witness the Power

Demolition: Witness the Power

1989

Greg "The Hammer" Valentine

Fan Favorites

Fan Favorites

1989

Greg Valentine

The Best of the WWF: volume 20

The Best of the WWF: volume 20

1989

Greg "The Hammer" Valentine

The Ultimate Warrior

The Ultimate Warrior

1989

Greg "The Hammer" Valentine

WWE Wrestling at The Meadowlands: May '89

WWE Wrestling at The Meadowlands: May '89

1989

Greg "The Hammer" Valentine

WWE Maple Leaf Wrestling: April '89

WWE Maple Leaf Wrestling: April '89

1989

Greg "The Hammer" Valentine

WWE WrestleMania V

WWE WrestleMania V

1989

Greg "The Hammer" Valentine

WWE Los Angeles Wrestling: January '89

WWE Los Angeles Wrestling: January '89

1989

Greg "The Hammer" Valentine

WWE Royal Rumble 1989

WWE Royal Rumble 1989

1989

Greg "The Hammer" Valentine

WWE Los Angeles Wrestling: December '88

WWE Los Angeles Wrestling: December '88

1988

Greg "The Hammer" Valentine

WWE Survivor Series 1988

WWE Survivor Series 1988

1988

Greg "The Hammer" Valentine

Macho Madness

Macho Madness

1988

Greg "The Hammer" Valentine

WWE U.K. Rampage 1988

WWE U.K. Rampage 1988

1988

Greg "The Hammer" Valentine

WWE Wrestling at The Meadowlands: September '88

WWE Wrestling at The Meadowlands: September '88

1988

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

Greg "The Hammer" Valentine

WWE Maple Leaf Wrestling: July '88

WWE Maple Leaf Wrestling: July '88

1988

Greg "The Hammer" Valentine

WWE Maple Leaf Wrestling: April '88

WWE Maple Leaf Wrestling: April '88

1988

Greg "The Hammer" Valentine

WWE WrestleMania IV

WWE WrestleMania IV

1988

Greg "The Hammer" Valentine

Clash of the Champions

Clash of the Champions

1988

Greg "The Hammer" Valentine

Brutus "The Barber" Beefcake

Brutus "The Barber" Beefcake

1988

Greg "The Hammer" Valentine

The Best of the WWF: volume 14

The Best of the WWF: volume 14

1987

Greg "The Hammer" Valentine

Wrestling's Most Embarrassing Moments

Wrestling's Most Embarrassing Moments

1987

Greg "The Hammer" Valentine

WWE Houston Wrestling: December '87

WWE Houston Wrestling: December '87

1987

Greg "The Hammer" Valentine

WWE Survivor Series 1987

WWE Survivor Series 1987

1987

Greg Valentine

WWE Houston Wrestling: October '87

WWE Houston Wrestling: October '87

1987

Greg "The Hammer" Valentine

WWE Maple Leaf Wrestling: June '87

WWE Maple Leaf Wrestling: June '87

1987

Greg "The Hammer" Valentine

The Best of the WWF: volume 11

The Best of the WWF: volume 11

1987

Greg "The Hammer" Valentine

WWE WrestleMania III

WWE WrestleMania III

1987

Greg "The Hammer" Valentine

The Best of the WWF: volume 10

The Best of the WWF: volume 10

1987

Greg "The Hammer" Valentine

WWE Maple Leaf Wrestling: January '87

WWE Maple Leaf Wrestling: January '87

1987

Greg "The Hammer" Valentine

WWE Wrestling at The Meadowlands: January '87

WWE Wrestling at The Meadowlands: January '87

1987

Greg "The Hammer" Valentine

Bob Uecker's Wacky World of Sports

Bob Uecker's Wacky World of Sports

1987

Greg "The Hammer" Valentine

Inside the Steel Cage

Inside the Steel Cage

1986

Greg "The Hammer" Valentine

WWE Houston Wrestling: October '86

WWE Houston Wrestling: October '86

1986

Greg "The Hammer" Valentine

The British Bulldogs

The British Bulldogs

1986

Greg Valentine

The Best of the WWF: volume 9

The Best of the WWF: volume 9

1986

Greg "The Hammer" Valentine

WWF Wrestling Challenge

WWF Wrestling Challenge

1986

Greg Valentine / Greg "The Hammer" Valentine

WWF Superstars

WWF Superstars

1986

Greg "The Hammer" Valentine

WWE The Big Event

WWE The Big Event

1986

Greg "The Hammer" Valentine

The Best of the WWF: volume 7

The Best of the WWF: volume 7

1986

Greg "The Hammer" Valentine

Ricky "The Dragon" Steamboat

Ricky "The Dragon" Steamboat

1986

Greg "The Hammer" Valentine

WrestleMania II

WrestleMania II

1986

Greg "The Hammer" Valentine

WWE Grudge Match

WWE Grudge Match

1986

Greg "The Hammer" Valentine

Tag Team Champions

Tag Team Champions

1986

Greg Valentine

The Best of the WWF: volume 5

The Best of the WWF: volume 5

1986

Greg "The Hammer" Valentine

The WWF's Amazing Managers

The WWF's Amazing Managers

1985

Greg 'The Hammer' Valentine

WWE Maple Leaf Wrestling: December '85

WWE Maple Leaf Wrestling: December '85

1985

Greg "The Hammer" Valentine

WWE Maple Leaf Wrestling: October '85

WWE Maple Leaf Wrestling: October '85

1985

Greg "The Hammer" Valentine

WWE Maple Leaf Wrestling: September '85

WWE Maple Leaf Wrestling: September '85

1985

Greg "The Hammer" Valentine

The Best of the WWF: volume 4

The Best of the WWF: volume 4

1985

Greg "The Hammer" Valentine

WWE Saturday Night's Main Event

WWE Saturday Night's Main Event

1985

Greg Valentine / Greg "The Hammer" Valentine

WWE Maple Leaf Wrestling: April '85

WWE Maple Leaf Wrestling: April '85

1985

Greg "The Hammer" Valentine

WrestleMania

WrestleMania

1985

Greg "The Hammer" Valentine

WWE Pay Per View

WWE Pay Per View

1985

Most Unusual Matches

Most Unusual Matches

1985

Greg "The Hammer" Valentine

WWF Hulkamania 1

WWF Hulkamania 1

1985

Greg Valentine

WWE Maple Leaf Wrestling: October '84

WWE Maple Leaf Wrestling: October '84

1984

Greg "The Hammer" Valentine

WWE Maple Leaf Wrestling: September '84

WWE Maple Leaf Wrestling: September '84

1984

Greg "The Hammer" Valentine

WWE The Brawl to End it All

WWE The Brawl to End it All

1984

Greg "The Hammer" Valentine

Tuesday Night Titans

Tuesday Night Titans

1984

Greg "The Hammer" Valentine / Greg Valentine

NWA Boogie Jam

NWA Boogie Jam

1984

Greg Valentine

NWA Starrcade 1983

NWA Starrcade 1983

1983

Greg "The Hammer" Valentine

WCW Arena Shows

WCW Arena Shows

1983

Greg Valentine

NWA The Race to Starrcade

NWA The Race to Starrcade

1983

Greg Valentine

NWA The Final Conflict

NWA The Final Conflict

1983

Greg Valentine

NWA Sam Muchnick Retirement Show

NWA Sam Muchnick Retirement Show

1982

Greg Valentine

Mid-Atlantic Championship Wrestling

Mid-Atlantic Championship Wrestling

1981

Greg Valentine

WWF All-Star Wrestling

WWF All-Star Wrestling

1975

Greg Valentine / Greg 'The Hammer' Valentine

WWE Old School

WWE Old School

1973

Greg Valentine / Greg "The Hammer" Valentine