Check out AJ Sousa and Luke Costello exchanging some jiu jitsu techniques at the BJJ Hostel. AJ and Luke are both highly accomplished black belt athletes who took part in the BJJ Library Challenge! Both athletes also competed in the BJJ Kumite a few years back and have quite a few championship titles under their belts.
Luke Costello is a brown belt world champion, 3x European Champion, 2x World Silver Medalist, 2x Abu Dhabi World Pro Champion, and Abu Dhabi World Pro No-Gi Champion.
AJ Sousa is a 2013 IBJJF No-Gi World Champion and multiple time champion of many IBJJF tournaments.