Anthony Joshua has chink in his armour that Daniel Dubois can exploit to pull off stunning upset

Anthony Joshua has a subtle weakness in his game, Daniel Dubois' former trainer Shane McGuigan has pointed out.

The heavyweight titans will meet this weekend for the IBF heavyweight title in front of 96,000 fans at Wembley Stadium.

Whoever emerges victorious will punch their ticket for an undisputed heavyweight clash with the winner of Oleksandr Usyk and Tyson Fury's rematch on December 21.

Ahead of fight night, talkSPORT's Spencer Oliver and Dubois' ex-trainer McGuigan previewed the all-British showdown by running through both men's keys to victory, complete with a visual display on the talkSPORT Boxing YouTube channel.

The voice of British boxing, Adam Smith, watched on while Oliver and McGuigan donned gloves and headgear as they delved into the main chink in AJ's amour.

"When he's in the fire, he can be vulnerable," said Smith.

McGuigan replied: "Absolutely, because he drops his right hand when he throws a jab.

"So when he throws a jab he separates it [from the right hand] to get it to really travel.

"And when he gets brave, he drops his right hand."

When Joshua opens up and gets greedy with his work, he leaves himself open to the left hook.

Case in point, his knockout loss to Andy Ruiz Jr in 2019 and his close call in the second round against Dillian Whyte.