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.
Filmography
Raw
All Elite Wrestling: Dynamite
WWE Saturday Night's Main Event
WWF Wrestling Challenge
WWE Pay Per View
WWF Superstars
WWE Old School
WWF All-Star Wrestling
Mid-Atlantic Championship Wrestling
Biography: WWE Legends
Clash of the Champions
WWE's Most Wanted Treasures
Undertaker: The Last Ride
Tuesday Night Titans
WrestleMania II
WCW Arena Shows
WWE SummerSlam 1991
WWE WrestleMania III
WrestleMania
The Greatest Wrestling Stars of the '80s
Midnight Massacre
WWE WrestleMania VII
WWE: The History Of The WWE Championship
WWE Survivor Series 1988
WWE Royal Rumble 1994
WWE Survivor Series 1987
WWE: The History Of The Intercontinental Championship
WWE: The U.S. Championship: A Legacy of Greatness
WWE SummerSlam 1989
WCW Beach Blast