Boyka: Undisputed (also known as Undisputed IV) is a 2017 American martial arts film directed by Isaac Florentine, and written by David White and Tony Mosher with a story by Boaz Davidson. It is the sequel to the 2010 boxing film Undisputed III: Redemption. Scott Adkins reprises his role as Yuri Boyka. Tim Man, who choreographed the action for Adkins in Florentine's Ninja: Shadow of a Tear, serves as the film's fight choreographer.On September 22, 2016 the film premiered at the Fantastic Fest. The distribution rights were bought by Universal Pictures Home Entertainment that officially released the film under the title Boyka: Undisputed on August 1, 2017 on DVD and Blu-ray in US.