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...
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WrestleMania
As Greg "The Hammer" Valentine
WrestleMania II
As Greg "The Hammer" Valentine
WWE WrestleMania V
As Greg "The Hammer" Valentine
WWE WrestleMania III
As Greg "The Hammer" Valentine
Battle of the WWE Superstars
As Greg Valentine
WWE WrestleFest '91
As Greg "The Hammer" Valentine
The British Bulldogs
As Greg Valentine
WWF Hottest Matches
As Greg "The Hammer" Valentine
WWF SuperTape vol. 2
As Greg "The Hammer" Valentine
WWF SuperTape '92
As Greg "The Hammer" Valentine
WWE Demolition
As Greg "The Hammer" Valentine
WWE Mega Matches
As Greg "The Hammer" Valentine
WWE Rampage '91
As Greg "The Hammer" Valentine
The Ultimate Warrior
As Greg "The Hammer" Valentine
Ricky "The Dragon" Steamboat
As Greg "The Hammer" Valentine
WWE WrestleMania VII
As Greg "The Hammer" Valentine
WWE Royal Rumble 1991
As Greg "The Hammer" Valentine
WWE SummerSlam 1991
As Greg "The Hammer" Valentine
WWE Survivor Series 1993
As The Blue Knight
WWE Survivor Series 1990
As Greg "The Hammer" Valentine
WWE Survivor Series 1988
As Greg "The Hammer" Valentine
NWA Starrcade 1983
As Greg "The Hammer" Valentine
Midnight Massacre
As Caepio
WCW Beach Blast
As Greg "The Hammer" Valentine
WCW World War 3 1997
As Greg "The Hammer" Valentine
Bob Uecker's Wacky World of Sports
As Greg "The Hammer" Valentine
Behind the Ropes: The Greatest Fraternity in the World
As Himself
Fan Favorites
As Greg Valentine
At What Cost? Anatomy of Professional Wrestling
As Himself
WWE's Inside the Steel Cage
As Greg 'The Hammer' Valentine
The Best of the WWF: volume 4
As Greg "The Hammer" Valentine
The Best of the WWF: volume 5
As Greg "The Hammer" Valentine
The Best of the WWF: volume 7
As Greg "The Hammer" Valentine
The Best of the WWF: volume 9
As Greg "The Hammer" Valentine
The Best of the WWF: volume 10
As Greg "The Hammer" Valentine
The Best of the WWF: volume 11
As Greg "The Hammer" Valentine
The Best of the WWF: volume 14
As Greg "The Hammer" Valentine
The Best of the WWF: volume 16 Around the World
As Greg "The Hammer" Valentine
The Best of the WWF: volume 20
As Greg "The Hammer" Valentine
The WWF's Most Unusual Matches
As Greg 'The Hammer' Valentine
WWF Hulkamania 1
As Greg Valentine
World Wrestling Legends: 6:05 - The Reunion
As Greg Valentine
Timeline: The History of WWE – 1985 – As Told By Greg Valentine
As Himself
WWE: The U.S. Championship: A Legacy of Greatness
As Greg 'The Hammer' Valentine (archive footage)
JCW Legends and Icons
WWE Maple Leaf Wrestling: April '89
As Greg "The Hammer" Valentine
WWE U.K. Rampage 1988
As Greg "The Hammer" Valentine
WWE Houston Wrestling: October '86
As Greg "The Hammer" Valentine
WWE Houston Wrestling: October '87
As Greg "The Hammer" Valentine
WWE Houston Wrestling: December '87
As Greg "The Hammer" Valentine
WWE Los Angeles Wrestling: January '89
As Greg "The Hammer" Valentine
WWE Los Angeles Wrestling: December '88
As Greg "The Hammer" Valentine
WWE Maple Leaf Wrestling: September '84
As Greg "The Hammer" Valentine
WWE Maple Leaf Wrestling: October '84
As Greg "The Hammer" Valentine
WWE Maple Leaf Wrestling: April '85
As Greg "The Hammer" Valentine
WWE Maple Leaf Wrestling: September '85
As Greg "The Hammer" Valentine
WWE Maple Leaf Wrestling: October '85
As Greg "The Hammer" Valentine
WWE Maple Leaf Wrestling: December '85
As Greg "The Hammer" Valentine
WWE Maple Leaf Wrestling: January '87
As Greg "The Hammer" Valentine
WWE Maple Leaf Wrestling: June '87
As Greg "The Hammer" Valentine
WWE Maple Leaf Wrestling: April '88
As Greg "The Hammer" Valentine
WWE Wrestling at The Meadowlands: January '87
As Greg "The Hammer" Valentine
WWE Maple Leaf Wrestling: July '88
As Greg "The Hammer" Valentine
WWE Wrestling at The Meadowlands: September '88
As Greg "The Hammer" Valentine
WWE Wrestling at The Meadowlands: May '89
As Greg "The Hammer" Valentine
WWE: The History Of The WWE Championship
WWE Hall of Fame 2004
WWF/AJPW/NJPW Wrestling Summit
WWE: 150 Best Pay-Per-View Matches, Vol 1
As Himself
WWE: The History Of The Intercontinental Championship
As Himself
WWE: Starrcade - The Essential Collection
As Himself
NWA The Final Conflict
As Greg Valentine
350 Days
As Self
Tag Team Champions
As Greg Valentine
WWE WrestleMania IV
As Greg "The Hammer" Valentine
WCW Clash of The Champions XX: 20th Anniversary
As Greg "The Hammer" Valentine
Heroes of Wrestling
As Greg "The Hammer" Valentine
WWE Royal Rumble 1989
As Greg "The Hammer" Valentine
WWE Survivor Series 1989
As Greg "The Hammer" Valentine
NWA Sam Muchnick Retirement Show
As Greg Valentine
NWA The Race to Starrcade
As Greg Valentine
NWA Boogie Jam
As Greg Valentine
WWE The Brawl to End it All
As Greg "The Hammer" Valentine
WWE The Ultimate Challenge Special: The March to WrestleMania VI
As Greg "The Hammer" Valentine
WWE The Big Event
As Greg "The Hammer" Valentine
WWE Survivor Series 1987
As Greg Valentine
WWE U.K. Rampage 1991
As Greg "The Hammer" Valentine
WWE Superstars & Stripes Forever: The March to WrestleMania VII
As Greg "The Hammer" Valentine
WWE Royal Rumble 1992
As Greg "The Hammer" Valentine
WWE Royal Rumble 1994
As Greg "The Hammer" Valentine
WCW Wrestle War: WarGames
As Greg "The Hammer" Valentine
WWE Royal Rumble 1990
As Greg "The Hammer" Valentine
WWE SummerSlam 1989
As Greg Valentine
Chris Jericho's 30th Anniversary Celebration
As Greg "The Hammer" Valentine
Biography: “Rowdy” Roddy Piper
As Self
Saturday Night's Main Event
Biography: WWE Legends
As Greg "The Hammer" Valentine
AWF Warriors of Wrestling
As Greg "The Hammer" Valentine
WWE's Most Wanted Treasures
As Greg "The Hammer" Valentine
WWE Raw
As Greg "The Hammer" Valentine
WWF Wrestling Challenge
As Greg Valentine
WWE Pay Per View
As Greg "The Hammer" Valentine
All Elite Wrestling: Dynamite
As Greg Valentine