WBA, IBF, IBO heavyweight champion Anthony Joshua (20-0, 20 KOs) is planning to stick around for a very long time.

The 2012 Olympic gold medal winner has a career-defining year in 2017, when he stopped Wladimir Klitschko last April before a crowd of 90,000 fans at Wembley in London. Joshua survived some rocky moments, like getting dropped in the sixth round, to knock Klitschko out in the eleventh.

He then came back in the fall, before a crowd of 78,000 at Principality Stadium in Cardiff, Wales - as he stopped IBF mandatory challenger Carlos Takam in ten rounds.

Now comes the second most important fight of his career, as next Saturday night he will collide with WBO world champion Joseph Parker (24-0, 18 KOs) in a dangerous unification - which also takes place at Principality Stadium in Cardiff. A crowd of 78,000 is expected to attend. The contest will be carried in the United States by Showtime and in the UK by Sky Sports Box Office.

A win over Joshua could lead to a showdown, at some point in 2018, with WBC heavyweight champion Deontay Wilder (40-0, 39 KOs).

Klitschko, who retired following the loss to Joshua, had ruled the heavyweight division for a decade. 

Joshua believes that he's fully capable of doing the same.

"I'm fully focused on Parker," Joshua told Sky Sports. "Who's to say afterwards I couldn't fight on for another 10 years?

"I'm 28, Klitschko retired at 40 years old, and Mayweather is 41 and people say he could still fight on. Who is to say I couldn't fight on until 38? History shows athletes go on a lot longer, provided they take care of their body.

"I don't want to have to leave boxing; I want to do it because I love it. I don't want to do it for the fame, and I want to do it because I enjoy it and still want to be at a high level."