アブダビコンバット
David has competed in the 2005 ADCC Submission Wrestling World Championship, the 2007 ADCC Submission Wrestling World Championship, the 2009 ADCC Submission Wrestling World Championship, where he won a Bronze Medal in the 87.9 kg division, and most recent the 2011 ADCC Submission Wrestling World Championship and the 2013 ADCC Submission Wrestling World Championship. He competed at the ADCC World Championship in 2015.