He appeared on The Ultimate Fighter 5, the fifth season of the Ultimate Fighting Championship produced reality television series The Ultimate Fighter. On the show, DeSouza was the wrestling coach of Team Penn, the team coached by former UFC Welterweight champion, and current UFC lightweight champion BJ Penn.
His style of fighting is a blend of freestyle wrestling and Brazilian jiu jitsu. De Souza competed in wrestling throughout his high school and college years in Los Angeles. He learned Brazilian jiu jitsu under John Lewis and Andre Pederneiras. De Souza's trademark submission is a modified guillotine choke known as the Peruvian Necktie. C.B. Dollaway used this choke to defeat Jesse Taylor at UFC: Silva vs. Irvin.
To date, DeSouza has a professional mixed martial arts record of ten wins and four losses.
|Professional record breakdown|
|14||10 wins||4 losses|
|Loss||Roan Carneiro||TKO (Punches)||UFC 79: Nemesis||December 29, 2007||2||3:33|
|Loss||Thiago Alves||KO (Knee)||UFC 66: Liddell vs Ortiz II||December 30, 2006||2||1:10|
|Win||Dustin Hazelett||Submission (Kimura)||Ortiz vs Shamrock 3 - The Final Chapter||October 10, 2006||1||3:59|
|Win||Fabricio Monteiro||Decision (Majority)||Gold Fighters Championship 1||May 20, 2006||3||5:00|
|Win||Vitelmo Kubis Bandeira||Submission (Kneebar)||Jungle Fight 6||April 29, 2006||1||4:38|
|Loss||Angelo Diaz||TKO (Cut)||South American Open||April 15, 2005||1||N/A|
|Win||Carlos Lima||Submission (Arm Triangle Choke)||Jungle Fight 3||October 23, 2004||2||0:32|
|Win||Luiz Azeredo||Decision (Split)||Meca World Vale Tudo 11||June 5, 2004||3||5:00|
|Win||Chatt Lavender||TKO (Cut)||World Fighting Alliance 1||November 3, 2001||1||3:24|
|Loss||Jutaro Nakao||KO (Punch)||UFC 33: Victory in Vegas||September 28, 2001||2||0:15|
|Win||Paul Rodriguez||Submission (Guillotine Choke)||UFC 32: Showdown in the Meadowlands||June 29, 2001||1||1:05|
|Win||Steve Berger||Decision (Unanimous)||UFC 31: Locked & Loaded||May 4, 2001||3||5:00|
|Win||Kenneth Tanario||Submission (Toe Hold)||Gladiator Challenge 1||December 9, 2000||1||0:56|
|Win||Ben Melendez||Submission (Strikes)||CFF - The Cobra Classic 2000||August 26, 2000||1||0:55|