The undercard for the battle between Eddie Hall and Thor Bjornsson has begun to take shape, with a showdown between CrossFit rivals Josh Bridges and Jacob Heppner added to the card.

MTK Global is serving as the Official Boxing Advisors for the event, which is set to take place in Las Vegas in September.

It is billed as ‘The Heaviest Boxing Match in History,’ with strongman rivals Hall and Bjornsson set to finally step into the ring to settle their differences.

The fight between Bridges and Heppner has now been confirmed for the show, pitting together two more rivals.

Bridges is a former Navy Seal and an elite Cross Games athlete, while Heppner is a rival of his from the CrossFit world, with the two men set to square off in a six round boxing match.

The duo will be dedicating the next six months to their boxing training, as they look to put everything they’ve learned as CrossFit athletes into their new goals.