Luke and Mark Graham: Father-son duo on their new league documentary Sharko - Weekend Sport with Jason Pine

The son of rugby league legend Mark Graham is using his father's sporting career as the basis for a new documentary.

Sharko tells the story of Mark Graham's athletic legacy - including the 29 tests he played for the Kiwis, his historic induction into the NRL Hall of Fame and being named as NZ Player of the Century in 2007.

Luke and Mark Graham joined Piney to discuss the documentary.

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