Former boxing champion Mike Tyson has fought back tears as he confessed to lying about his sobriety.

Joseph Parker's back - and he's looking bad. New Zealand's top heavyweight prospect arrived home on Thursday for a brief visit, after a gruelling seven-week training camp with Kevin Barry in Las Vegas.

Alexander Ustinov's camp will temporarily head back to Russia because of David Tua's calf injury, but fight promoters are confident the delay won't cost them too much.

Talking to a Russian (or Belarusian) boxer and his translator proves to be a surreal experience<

If David Tua's calf injury forces his fight against Alexander Ustinov to be delayed then promoters Duco Events will be scrambling to reschedule the event.

Victory over Russian Ustinov could set stage for another title fight as David Tua makes new bid for big time.

An inspired Kelly Lynch finds tension and excitement ringside in Bangkok.

Boxer David Tua had to answer honestly when a young student at Hamilton Boys' High asked him whether he'd ever been hit in the privates.

When it comes to boxing, few people are ever completely retired.

David Tua's do-or-die comeback bout will be in Hamilton on August 31 against a giant Russian - one of the most highly rated heavyweight boxers in the world, a war hero and a huge man of 2.03m and about 136kg, Alexander Ustinov.

By far the biggest problem David Tua faces in his heavyweight fight against Russian Alexander Ustinov on August 31 is the size of his 2.03m, 136kg adversary.

Sonny Bill Williams could be a victim of David Tua's bout with Russian giant Alexander Ustinov and his push for a world title fight.

Francois Botha downed tequila shots during a boozey night out just five days before getting pummelled by rising boxing star Joseph Parker.

Joseph Parker is a heavyweight boxer of such promise that he needs to be taken to the US - that's the word from the man Parker pitched into retirement after his second-round stoppage in their fight on Thursday night: Francois Botha.

Business is about to pick up in the world of Joseph Parker, following his second-round knock out of South African veteran Francois Botha in Auckland last night.

New Zealand's Joseph Parker announced his arrival in the ranks of respected heavyweights tonight with a second round knockout of durable South African heavyweight Francois Botha.

Our live blog tonight brings you all the action from the heavyweight boxing bout between Joseph Parker and Francois Botha from Trusts Arena in Auckland.

Soon after he fights Joseph Parker at Auckland's Trusts Arena tonight, Francois Botha's thoughts will start turning towards Evander Holyfield.