JOHN WISNISKI JR.
ACTING
John Wisniski, Jr. is an American professional wrestler, better known as Greg "The Hammer" Valentine.
He is the son of wrestler Johnny Valentine.
- WrestleMania 1985
- WrestleMania II 1986
- WWE WrestleMania III 1987
- WWE WrestleMania V 1989
- WWF SuperTape '92 1992
- WWE WrestleMania VII 1991
- WWE Royal Rumble 1991 1991
- WWE Survivor Series 1990 1990
- WWE SummerSlam 1991 1991
- WWE Survivor Series 1993 1993
- WWE Survivor Series 1988 1988
- NWA Starrcade 1983 1983
- WCW Beach Blast 1992
- WCW World War 3 1997 1997
- WWE: The U.S. Championship: A Legacy of Greatness 2016
- WWE WrestleMania IV 1988
- WWE Royal Rumble 1989 1989
- WWE Survivor Series 1989 1989
- WWE The Big Event 1986
- WWE Survivor Series 1987 1987
- WWE Royal Rumble 1992 1992
- WWE Royal Rumble 1990 1990
- WWE SummerSlam 1989 1989
- WWE Royal Rumble 1994 1994
- WCW Wrestle War: WarGames 1992
- Biography: WWE Legends 2021
- WWE's Most Wanted Treasures 2021
- WWE Raw 1993
- WWF Wrestling Challenge 1986
- All Elite Wrestling: Dynamite 2019