UFC President Dana White first released the news via Twitter on Monday.
MMAWeekly.com sources had indicated on Sunday that potential fight between Nelson and Gonzaga could be in the works, but only one side had verified interest in the bout. Now it appears both fight camps are on board with the bout taking place at UFC 146.
Originally, Nelson was on the card with a fight against Antonio ‘Bigfoot’ Silva while Gonzaga was taking on former Strikeforce prospect Shane Del Rosario.
Once main event fighter Alistair Overeem was pulled from the show, the dominoes began falling with new match-ups being made virtually every day.
Silva is now slotted to face Cain Velasquez in the UFC 146 co-main event, while Frank Mir replaces Overeem in the main event against champion Junior Dos Santos.
With Gonzaga now facing Nelson, that leaves Del Rosario as the only man without a fight currently, but the UFC will likely find a replacement in the coming days.
Gonzaga made a successful return to the UFC in January where he won in his home country of Brazil, taking out newcomer Ednaldo Oliveira with a first round rear naked choke.
Now the Brazilian Jiu-Jitsu black belt will face a much stiffer test as former Ultimate Fighter winner Roy Nelson greets him at UFC 146 in May.