Acting
John Wisniski Jr.
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.
Titles
All Elite Wrestling: Dynamite
2019
Raw
1993
Tuesday Night Titans
1984
WWF Superstars
1986
WWE Saturday Night's Main Event
1985
WWF Wrestling Challenge
1986
Mid-Atlantic Championship Wrestling
1981
WWF All-Star Wrestling
1975
WWE Old School
1973
Clash of the Champions
1988
Biography: WWE Legends
2021
Undertaker: The Last Ride
2020
WWE's Most Wanted Treasures
2021
NWA The Final Conflict
1983
WCW Arena Shows
1983
WWE WrestleMania VII
1991
WWE WrestleMania III
1987
WrestleMania II
1986
Chris Jericho's 30th Anniversary Celebration
2020
Macho Madness
1988
WWE Royal Rumble 1992
1992
WWE Survivor Series 1990
1990
WCW WrestleWar 1992
1992
WWE SuperTape: Volume 5
1992
WWE SummerSlam 1991
1991
WrestleMania
1985
Midnight Massacre
2025
Headstrong
2019
WWE: The U.S. Championship: A Legacy of Greatness
2016
WWE Royal Rumble 1989
1989
WWE Royal Rumble 1991
1991
Inside the Steel Cage
1986
WWE WrestleMania IV
1988
WWE Hottest Matches
1990
The Greatest Wrestling Stars of the '80s
2005
WWE WrestleFest '91
1991