Registration is now closed for the 2016 IBJJF Masters Worlds and over 3,600 athletes have signed up for the three-day competition, which runs Aug. 25-27. 

There are plenty of big names who are or very recently were active in the main tournament circuit in the adult divisions. 

2016 World silver medalist Caio Terra is in, as are fellow lighter weight competitors such as Milton Bastos, Osvaldo 'Queixinho' Moizino and Bruno Frazatto, who we saw at Worlds in June. 

A few notable competitors are making their debuts at Masters, such as Romulo Barral (who announced his retirement from Worlds, but not from competition in general). 

We're also seeing Clark Gracie at Masters for the first time as the San Diego-based grappler recently turned 30. 

The black belt Masters 1 Ultra Heavy division is stacked with big names, including Atos's Joseph Moku Kahawai Jr., James Puopolo of Lovato BJJ and renowned grappler Vinny Magalhaes. 

Some names of yesteryear are in at Masters 2, with Vitor 'Shaolin' Ribeiro in the light division alongside noted coach Cicero Costha. Eduardo Telles will compete along with Igor Gracie and more in the medium heavyweight division. 

Saulo Ribeiro, king of the Master's division, is back and will look to conquer the Master 3 heavyweight division. 

A name we haven't seen in the mix for many years is Carlson Gracie Jr, who is signed up for the Master 4 medium heavyweight division. He along with many of his team have signed up to honor the 10-year anniversary of his father's passing. 

Other notable names include Fabricio Camoes of Gracie Humaita in at Master 2 heavywight. Rafael 'Gordinho' Corrêa de Lima, brother of 'Gordo' (creator of the half guard) is signed up for Master 3 medium heavyweight. 

Studio 540 owner Robert Zeps is in at Master 4 heavyweight, and fan favorite Kurt Osiander will compete in the Master 5 medium heavy division. 

Don't forget you can watch live coverage of the 2016 World Master Jiu-Jitsu IBJJF Championship only on FloGrappling!

Take a look at some of the notable names that have put their name forward for the largest jiu-jitsu tournament on the IBJJF calendar, and see which division they've signed up for: 

BLACK / Master 1 / Male / Rooster
Caio Terra 
Total: 10

BLACK / Master 1 / Male / Light Feather
Milton Bastos 
Total: 18

BLACK / Master 1 / Male / Feather
Osvaldo 'Queixinho' Moizino 
Bruno Frazatto 
Total: 30

BLACK / Master 1 / Male / Light
Marcelo Mafra 
Total: 52

BLACK / Master 1 / Male / Middle
Clark Gracie 
Oliver Geddes 
Total: 45

BLACK / Master 1 / Male / Medium Heavy
Ezra Lenon
Vitor Oliveira 
Total: 43

BLACK / Master 1 / Male / Heavy
Tarsus Humphreys 
Diego Gamonal Nogueira 
Romulo Barral 
Total: 29

BLACK / Master 1 / Male / Ultra Heavy
Joseph Moku Kahawai Jr.
James Puopolo 
Vinny Magalhaes
Total: 18

BLACK / Master 1 / Female / Feather
Karen Antunes 
Laurence Cousin Fouillat
Total: 2

BLACK / Master 2 / Male / Light
Cicero Costha 
Vitor 'Shaolin' Ribeiro
Total: 41

BLACK / Master 2 / Male / Medium Heavy
Eduardo Telles 
Raphael Abi-Rihan 
Igor Gracie 
Total: 31

BLACK / Master 2 / Male / Heavy 
Fabricio Camoes 
Total: 29

BLACK / Master 2 / Male / Ultra Heavy
Bruno Bastos 
Total: 23

BLACK / Master 3 / Male / Feather
Sandro 'Batata' Ribeiro Santiago  
Total: 22

BLACK / Master 3 / Male / Medium Heavy
Thomas Cronin 
Rafael 'Gordinho' Corrêa de Lima 
Total: 25

BLACK / Master 3 / Male / Heavy
Saulo Ribeiro 
Total: 23 

BLACK / Master 4 / Male / Medium Heavy
Carlson Gracie Jr
Total: 14 

BLACK / Master 4 / Male / Heavy
Robert Zeps 
Roberto Traven 
Total: 9

BLACK / Master 4 / Male / Super Heavy
Ricardo Franjinha Miller 
Total: 8

BLACK / Master 5 / Male / Medium Heavy
Kurt Osiander
Total: 8
^​
See the full list of entrants here