JAKE PAUL is stepping up his preparations for his huge showdown with Anthony Joshua.

The 28-year-old bringing in three massive sparring partners to mimic the power of the former world champion.

NINTCHDBPICT001041877782Jake Paul with Jared Anderson, Frank Sanchez and Lawrence OkolieCredit: Instagram Jake Paul and Anthony Joshua face off during a press conference for their exhibition match.Jake Paul and Anthony Joshua headline a stacked bill on NetflixCredit: Getty

The YouTuber-turned-boxer has been sparring with heavyweight contenders Jared Anderson, Frank Sanchez and , whose combined weight tops 53 stone.

Paul posted a photo of the four in the gym, sparking huge reaction online as fans questioned whether he’s ready for a puncher as dangerous as Joshua.

The pair meet on December 19 in , in what will be a fully sanctioned professional heavyweight bout.

, wearing 10oz gloves, with no special exhibition rules in place.

It is by far the biggest fight of Paul’s career and the toughest opponent he has ever faced.

The behind the event is enormous, with the total purse expected to reach around £140 million.

Both fighters are set to earn roughly £70million each, making it one of the most lucrative events of the year.

Joshua is the clear favourite, with many experts predicting a short night once he starts letting his hands go.

Critics have questioned whether Paul has the size or experience to deal with a former unified heavyweight champion.

Anthony Joshua and Jake Paul press conferenceJoshua is the outright favourite for the fightCredit: Getty

But Team Paul insist he is taking seriously, and his brutal training schedule is proof.

The American believes sparring with seasoned heavyweights will help him handle Joshua’s power and pressure.

Joshua, meanwhile, has remained calm and focused as he prepares for what many expect to be a routine win.

But Paul is promising a shock in Miami and says he’s ready to silence every critic when the first bell rings.

The fight will be live on with the action set to begin at 8pm ET or 1am GMT..