• Controversial start-up reaches out to British athletes

• Olympic swimmer Ben Proud became first Briton to join

British athletes across multiple sports are being targeted by the Enhanced Games after the US sprint star Fred Kerley became the biggest name yet to sign up for the controversial event.

Kerley, the world 100m champion in 2022, said he was joining the Enhanced Games, which allows athletes to take performance-enhancing drugs that are banned in official events, to become the fastest man ever.

• He says his generation ‘just more talented’ than today’s

• Legendary sprinter no longer runs and is ‘into Lego now’

Usain Bolt made his comeback to the world of track and field on Sunday night and, for a moment, it was like the good old days. There was his trademark To Da World pose before the 100m finals. The cheers and adulation of 60,000 fans in Tokyo’s National Stadium. A reminder of glories past.

The 39-year-old Jamaican had not watched athletics at all since retiring in 2017 until seeing Melissa Jefferson-Wooden and Oblique Seville win gold. And, as he also admitted, he now spends his time streaming movies and building Lego – and even gets out of breath when he walks up stairs.