KSW XI was the eleventh numerical event from Polish mixed martial arts promotion Konfrontacja Sztuk Walki - their fourteenth event in total. The headliner is an 8-man tournament including Russian superstar Alexander Shlemenko. Unfortunately, Shlemenko sustained an injury during training and was replaced by his sparring partner, Sergei Nikitin. Another injury forced the polish pro boxer Marcin Najman to cancel his MMA debut against Jahmai Satisch. KSW replaced the bout with Łukasz Jurkowski vs. Atila Vegh.