John Wisniski Jr.
Acting
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.
Notable Works
Prominent titles featuring John Wisniski Jr.
Filmography
Acting (104)
2025
Midnight Massacreas Caepio
2020
Chris Jericho's 30th Anniversary Celebrationas Greg "The Hammer" Valentine
7.7
2019
350 Daysas Self
5.1
2019
Headstrongas Self
6.0
2016
WWE: The U.S. Championship: A Legacy of Greatnessas Greg 'The Hammer' Valentine (archive footage)
9.2
2015
2015
10.0
2014
10.0
2012
2008
7.3
2005
7.8
2005
World Wrestling Legends: 6:05 - The Reunionas Greg Valentine
2004
WWE Hall of Fame 2004as Self
8.3
1999
Heroes of Wrestlingas Greg "The Hammer" Valentine
1.0
1997
WCW World War 3 1997as Greg "The Hammer" Valentine
7.5
1994
WWE Royal Rumble 1994as Greg "The Hammer" Valentine
6.9
1993
WWE Survivor Series 1993as The Blue Knight
6.2
1992
The Immortal Hulk Hoganas Greg Valentine
1992
WCW Clash of The Champions XX: 20th Anniversaryas Greg "The Hammer" Valentine
1992
WCW Beach Blastas Greg "The Hammer" Valentine
8.0
1992
WCW WrestleWar 1992as Greg "The Hammer" Valentine
6.0
1992
WWE SuperTape: Volume 5as Greg "The Hammer" Valentine
1992
WWE Royal Rumble 1992as Greg "The Hammer" Valentine
6.9
1991
WWE Rampage '91as Greg "The Hammer" Valentine
1991
WWE SummerSlam 1991as Greg "The Hammer" Valentine
7.7
1991
WWE WrestleFest '91as Greg "The Hammer" Valentine
1991
WWE U.K. Rampage 1991as Greg "The Hammer" Valentine
6.0
1991
WWE Mega Matchesas Greg "The Hammer" Valentine
1991
WWE WrestleMania VIIas Greg "The Hammer" Valentine
7.3
1991
WWE Superstars & Stripes Forever: The March to WrestleMania VIIas Greg "The Hammer" Valentine
1991
WWE Funniest Momentsas Greg "The Hammer" Valentine
1991
WWE Royal Rumble 1991as Greg "The Hammer" Valentine
7.1
1990
WWE Survivor Series 1990as Greg "The Hammer" Valentine
7.7
1990
WWE Hottest Matchesas Greg "The Hammer" Valentine
1990
Battle of the WWE Superstarsas Greg Valentine
1990
WWE SuperTape: Volume 2as Greg "The Hammer" Valentine
1990
WWE The Ultimate Challenge Special: The March to WrestleMania VIas Greg "The Hammer" Valentine
1990
Wrestling Superheroesas Greg "The Hammer" Valentine
1990
WWE Royal Rumble 1990as Greg "The Hammer" Valentine
6.1
1989
WWE Survivor Series 1989as Greg "The Hammer" Valentine
7.8
1989
WWE SummerSlam 1989as Greg Valentine
6.7
1989
Demolition: Witness the Poweras Greg "The Hammer" Valentine
1989
Fan Favoritesas Greg Valentine
1989
The Best of the WWF: volume 20as Greg "The Hammer" Valentine
1989
The Ultimate Warrioras Greg "The Hammer" Valentine
1989
WWE Wrestling at The Meadowlands: May '89as Greg "The Hammer" Valentine
1989
WWE Maple Leaf Wrestling: April '89as Greg "The Hammer" Valentine
1989
WWE WrestleMania Vas Greg "The Hammer" Valentine
7.3
1989
WWE Los Angeles Wrestling: January '89as Greg "The Hammer" Valentine
1989
WWE Royal Rumble 1989as Greg "The Hammer" Valentine
5.8
1988
WWE Los Angeles Wrestling: December '88as Greg "The Hammer" Valentine
1988
WWE Survivor Series 1988as Greg "The Hammer" Valentine
8.0
1988
Macho Madnessas Greg "The Hammer" Valentine
1988
WWE U.K. Rampage 1988as Greg "The Hammer" Valentine
1988
WWE Wrestling at The Meadowlands: September '88as Greg "The Hammer" Valentine
1988
The Best of the WWF: volume 16 Around the Worldas Greg "The Hammer" Valentine
1988
WWE Maple Leaf Wrestling: July '88as Greg "The Hammer" Valentine
1988
WWE Maple Leaf Wrestling: April '88as Greg "The Hammer" Valentine
1988
WWE WrestleMania IVas Greg "The Hammer" Valentine
7.2
1988
Brutus "The Barber" Beefcakeas Greg "The Hammer" Valentine
1987
The Best of the WWF: volume 14as Greg "The Hammer" Valentine
1987
Wrestling's Most Embarrassing Momentsas Greg "The Hammer" Valentine
10.0
1987
WWE Houston Wrestling: December '87as Greg "The Hammer" Valentine
1987
WWE Survivor Series 1987as Greg Valentine
8.4
1987
WWE Houston Wrestling: October '87as Greg "The Hammer" Valentine
1987
WWE Maple Leaf Wrestling: June '87as Greg "The Hammer" Valentine
1987
The Best of the WWF: volume 11as Greg "The Hammer" Valentine
1987
WWE WrestleMania IIIas Greg "The Hammer" Valentine
7.4
1987
The Best of the WWF: volume 10as Greg "The Hammer" Valentine
1987
WWE Maple Leaf Wrestling: January '87as Greg "The Hammer" Valentine
1987
WWE Wrestling at The Meadowlands: January '87as Greg "The Hammer" Valentine
1987
Bob Uecker's Wacky World of Sportsas Greg "The Hammer" Valentine
1986
Inside the Steel Cageas Greg "The Hammer" Valentine
1986
WWE Houston Wrestling: October '86as Greg "The Hammer" Valentine
1986
The British Bulldogsas Greg Valentine
4.0
1986
The Best of the WWF: volume 9as Greg "The Hammer" Valentine
1986
WWE The Big Eventas Greg "The Hammer" Valentine
8.0
1986
The Best of the WWF: volume 7as Greg "The Hammer" Valentine
1986
Ricky "The Dragon" Steamboatas Greg "The Hammer" Valentine
10.0
1986
WrestleMania IIas Greg "The Hammer" Valentine
6.4
1986
WWE Grudge Matchas Greg "The Hammer" Valentine
1986
Tag Team Championsas Greg Valentine
1986
The Best of the WWF: volume 5as Greg "The Hammer" Valentine
1985
The WWF's Amazing Managersas Greg 'The Hammer' Valentine
1985
WWE Maple Leaf Wrestling: December '85as Greg "The Hammer" Valentine
1985
WWE Maple Leaf Wrestling: October '85as Greg "The Hammer" Valentine
1985
WWE Maple Leaf Wrestling: September '85as Greg "The Hammer" Valentine
1985
The Best of the WWF: volume 4as Greg "The Hammer" Valentine
1985
WWE Maple Leaf Wrestling: April '85as Greg "The Hammer" Valentine
1985
WrestleManiaas Greg "The Hammer" Valentine
6.7
1985
Most Unusual Matchesas Greg "The Hammer" Valentine
9.0
1985
WWF Hulkamania 1as Greg Valentine
1984
WWE Maple Leaf Wrestling: October '84as Greg "The Hammer" Valentine
1984
WWE Maple Leaf Wrestling: September '84as Greg "The Hammer" Valentine
1984
WWE The Brawl to End it Allas Greg "The Hammer" Valentine
10.0
1984
NWA Boogie Jamas Greg Valentine
1983
NWA Starrcade 1983as Greg "The Hammer" Valentine
7.3
1983
NWA The Race to Starrcadeas Greg Valentine
1983
NWA The Final Conflictas Greg Valentine
1982
NWA Sam Muchnick Retirement Showas Greg Valentine