Founded and operated by brothers Adam Singer and Rory Singer, The HardCore Gym has produced professional fighters such as former Ultimate Fighting Championship champion and The Ultimate Fighter season one winner Forrest Griffin, former World Extreme Cagefighting bantamweight champion Brian Bowles, upcoming heavyweight prospect Chris Barnett, former UFC fighter Cale Yarbrough, and others.
Tom Jones (singer) | John Singer Sargent | Pink (singer) | Lulu (singer) | Fergie (singer) | Engelbert Humperdinck (singer) | Adele (singer) | The Jazz Singer | Rory Gallagher | JoJo (singer) | Chris Brown (American singer) | Singer Corporation | Isaac Bashevis Singer | The Wedding Singer | Mark Murphy (singer) | Peter Singer | Mina (singer) | Duffy (singer) | Bryan Singer | Singer | Rory Bremner | Dido (singer) | Tarkan (singer) | Paul Weller (singer) | Elissa (singer) | David Cook (singer) | Rory Stewart | Rolf Singer | Sam Phillips (singer) | Roberto Carlos (singer) |