David discovered the CrossFit program in 2008; a few years later he received both his Level 1 Trainer Certification and his CrossFit Endurance Certification, catapulting him from participant to trainer. In addition to training members using the CrossFit methodology, David became a CrossFit competitor.
In 2010, he qualified for the CrossFit Games Regionals and took 20th place. In 2011, David finished in the top 100 in the CrossFit Games Open Sectionals out of over 10,000 male athletes that participated worldwide. In July 2011, he was part of a CrossFit Games team that placed 8th in the CrossFit World Championships.