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.
Born
Known for
Also known as
Links
Known for
Filmography
Midnight Massacre
2025 · Movie · Caepio
7.4Biography: WWE Legends
2021 · TV · Greg "The Hammer" Valentine · 1 ep
8.6WWE's Most Wanted Treasures
2021 · TV · Greg "The Hammer" Valentine · 2 ep
7.7Chris Jericho's 30th Anniversary Celebration
2020 · Movie · Greg "The Hammer" Valentine
7.4Undertaker: The Last Ride
2020 · TV · Greg Valentine (archive footage) · 1 ep
7.9All Elite Wrestling: Dynamite
2019 · TV · Greg Valentine · 1 ep
5.1350 Days
2019 · Movie · Self
6.0Headstrong
2019 · Movie · Self
9.2WWE: The U.S. Championship: A Legacy of Greatness
2016 · Movie · Greg 'The Hammer' Valentine (archive footage)
Behind the Ropes: The Greatest Fraternity in the World
2015 · Movie · Himself
10.0At What Cost? Anatomy of Professional Wrestling
2015 · Movie · Himself
- 10.0
WWE: 150 Best Pay-Per-View Matches, Vol 1
2014 · Movie · Himself