AUSTRALIAN heavyweight boxing champion Alex Leapai adopted an unusual early morning training session heading to Brisbane's Rocklea markets to show off his punching power.  

On October 24 it will be highly-rated American heavyweight Malik Scott, a former US amateur champion with an imposing professional record of 36 wins from 39 fights, that Leapai will be trying to destroy with his big punches, not a watermelon which was no match for his right hand as he entertained workers at the fruit markets on Thursday morning.

Leapai has picked a very tough opponent to get back in the ring against after suffering the worst loss of his 38 fight career, pummelled into submission in five rounds by towering Ukrainian Wladimir Klitschko in a world title fight back in April.  

The father of six who was a courier van driver before his fists took to a shot at a world title this year said his clash with Scott was a huge fight for both boxers.  

"The winner of this fight goes straight into the (world) top 10.  

"We need to win this fight to get back up to the top. Malik Scott is no easy opponent but we chose him because he is one of the best around and we have to beat the best to get another title shot."  

A lot of experts are concerned trainer Noel Thornberry is tossing Leapai under the bus by bringing him back from such a heavy loss against such a season opponent as Scott.  

"You didn't see the best of the Lionheart in that last fight (against Klitschko). They're all going on that fight but on October 24, you'll see the Lionheart. You'll see what I was supposed to do and I will do it on Malik Scott," he said.