Perhaps no other heavyweight in MMA today has more superstar potential than Marcus 'Buchecha' Almeida. The former 17-time Brazilian jiu-jitsu world champion is on a dominant run in ONE Championship's heavyweight MMA division and will not be looking to stop any time soon. View this post on Instagram Instagram PostA lot of world champion grapplers and jiu-jitsu specialists have transitioned into MMA but very few get to see gold around their waist. 'Buchecha', however, is not just any jiu-jitsu world champion. If you look at the Mt. Rushmore of submission grappling, Almeida is definitely right up there. He is considered by many to be the most accomplished submission grappler of all time.When he signed to ONE Championship's MMA roster last year, the jiu-jitsu world lost their minds as one of their greatest sons would be bursting into the MMA scene. That’s what he did as the Brazilian grappler finished his first three fights inside the first round. View this post on Instagram Instagram PostNow that he's gaining momentum in the sport and perhaps breaking through the upper ranks of the division, let's look at possible matchups for 'Buchecha'. Here are three opponents that could pose serious challenges for Almeida, but also significantly increase his stock in the sport.#3. Marcus 'Buchecha' Almeida vs. former ONE heavyweight world champion Brandon VeraAlthough former ONE heavyweight world champion Brandon 'The Truth' Vera has not seen the winning column in over three years, he's only lost to the very best. Vera has held the ONE heavyweight world title for over five years and looked dominant over his challengers before losing the belt. View this post on Instagram Instagram PostIf Almeida fights Vera, he will be facing his most decorated, accomplished and experienced opponent to date. As far as striking is concerned, not only does Vera have power, he is also the most versatile amongst all of Almeida's opponents in the past. Vera's powerful Muay Thai can put anyone away in various ways. Almeida better be in his full MMA A-game if he is to face 'The Truth'.Beyond all that, however, facing and beating a former ONE world champion will definitely increase Almeida's stock and make a strong case for him to fight for the belt soon.