The fight was a mismatch from the moment it was booked: Marunde was a late replacement who just isn't on the same level as Jacare, one of the best Brazilian jiu jitsu practitioners in the world.
Marunde knew he had nothing for Jacare and mostly played defense before finally getting finished in the third round.
In the first round Jacare took Marunde's back and appeared to be working his way toward a submission, but when Jacare hit Marunde in the back of the head, the referee stood the fight up, giving Marunde new life. Jacare then dropped Marunde with a right hand and pounced on him on the ground, but Jacare wasn't able to submit Marunde on the ground, and Marunde survived the first.
In the second round Jacare opened up his striking, with punches, front kicks and even a spinning back kick, hurting Marunde in the process. But when he took Marunde down and took his back, Marunde surprisingly shook him off and got back to his feet. Jacare dominated the striking, but Marunde once again survived the round.
Jacare started the third round with a takedown, and now he was finally in the place he wanted to be: Jacare stayed on top of Marunde and worked to improve his position for a couple of minutes before finally sinking in an arm-triangle choke to end the fight.