The heavyweight caught Rafael de Lima in his trademark triangle choke to capture the only medal he didn’t have as a purple belt.
Curiously enough, last year, Meregali lost the open class final to Edwin Najmi when he was caught in a flying triangle.
Nicholas was awarded his brown belt at the podium of the 2015 Worlds.
With a choke from side control, Tayane Porfirio beat Yacinta Nguyen-Huu to become female purple belt open class champion.
With that, she completes total domination of the division with double gold in 2015 at Worlds, Brazilian Nationals, Pan, European and WPJJC.
In the female blue belt open class division, Gabrielle Lima was the standout.
With a last minute near sweep on Michelle Welti, Gabi secured her a 1-0 win on advantages.
In the teams competition, Alliance is leading the male adult division with 53pts after two days.
Atos JJ follows the leader with 35pts and PSLPB Cicero Costha appears in third with 28pts.
Day 3 starts at 9AM this Saturday and the black belt open class division kicks off at 10am.
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Here’s a photo gallery of day 2 of the 2015 Worlds.