Du Dang, more commonly known by his nickname NuckleDu, is an American fighting game player known for playing Guile and Decapre in Ultra Street Fighter IV, Guile and Zangief in Street Fighter X Tekken, and Guile and Rainbow Mika in Street Fighter V. NuckleDu was ranked as the 13th best player in Ultra Street Fighter IV by EventHubs, and was ranked at #19 in the previous year and #32 in 2013. In Street Fighter V, he was undeniably the most successful player in the latter half of Season 1.

The 2015 Evolution Championship Series was a fighting game event held in Las Vegas on July 17–19. The event featured a major tournament for nine fighting games, including the largest Super Smash Bros. tournament up to that point and a highly popular Ultra Street Fighter IV tournament. The Street Fighter IV tournament was won by Yusuke Momochi, defeating GamerBee in the Grand Finals.