One of the best grapplers in the world is set to make her transition to mixed martial arts.

Mackenzie Dern, a jiu-jitsu black belt under her father Wellington "Megaton" Dias, signed a deal with Legacy FC and will make her MMA debut July 22 in Dallas, the promotion announced Thursday.

Dern, who won the IBJJF jiu-jitsu world championship and ADCC in 2015, competes between 127 and 132 pounds in jiu-jitsu and grappling. For her MMA debut, Dern told MMAFighting.com she will cut down to 115 pounds. The promotion has yet to announce an opponent.

"I hope I can represent jiu-jitsu well and put on a good performance," said Dern, who turns 23 years old on March 24. "Of course, I will try to be aggressive, but it’s my first fight, so I will still feel everything, see what I have to improve."

Dern is training at The MMA Lab for her mixed martial arts debut.

Um vídeo publicado por Mackenzie Dern (@mackenziedern) em Mar 8, 2016 às 3:25 PST