Frowning, Jelacic got to his feet and picked up a pair of old trainers from the mat below the hook.
"Duran couldn't accept Leonard's clowning," the old trainer said later.
Younger trainers, older trainers, it's a very unique field.
The old trainer smiled, the way he has for his 22 dedicated years on the Nets' bench.
He wore jeans, a red and blue check shirt and tatty old trainers.
It became a game between he and his old trainer about how he could make fighters miss.
Norman hadn't brought any rockboots, and intended climbing in the old green trainers he was wearing.
But the old trainer sounded content with his matador's progress.
Be wary also of shops flogging any old trainers they can get their hands on.
"Bobby said, 'Yeah, whenever some old trainer retires, they're always passing the hat.' "