Bobby Tambling yanks up the hem of his trousers to reveal the leg he once asked a doctor to chop off.
A mass of scar tissue looks like damage from a late tackle by a shark.
Even for a footballer who trained with Ron 'Chopper' Harris on a daily basis in a golden era for hatchet-men, this is not normal.
'I couldn't walk,' says the man who scored 202 goals for Chelsea.