Junior national power tumbling champion, Brandon Krzynefski, is a World Champion. At 16, Brandon won gold in the 15-16 division of the World Age Group Championship in Sophia, Bulgaria, in November, 2013. The World Age Group Championship is the highest level competition for a junior international elite power tumbler. Krzynefksi led the field after prelims, and then scored 33.900 in the finals to win the gold. The title of World Champion is especially sweet for Krzynefski because he missed 2011 and 2012 World Age Group Championships because of injury. After being unable to compete nationally or internationally for two years, Krzynefski made a triumphant return to competition in 2013, winning every competition he entered.
Before his gold at the World Age Group championship, Brandon won gold medals at the 2013 U.S. Elite Challenge, the 2013 Trampoline and Tumbling Championships, and the 2013 Stars & Stripes Cup. In 2009, at 12, he won the bronze in the 11-12 division in St. Petersburg, Russia. The following year, he finished fifth in the 13-14 division at the competition in Metz, France.