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.

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.