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"I remember before the Australian Open this year, I was not in a very happy moment because there was still that case of doping," Sinner told Italian broadcaster RAI.

Or after a two-year doping scandal, unnecessary egg slap and a criticised weight agreement, should we move on from this family feud?

But the bloodline rivalry, doping scandal and egg slap all led to their sons, nobody else, standing face-to-face inside a boxing ring.

Benn, who has denied intentional doping and has been cleared to fight by anti-doping authorities, is unbeaten in 23 pro fights.

Benn has since been cleared to fight and denies intentionally doping, but the scandal has tarnished his reputation.