A split decision (SD) is a winning criterion in several full-contact combat sports (such as boxing, kickboxing, Kun Khmer, Muay Thai, mixed martial arts and other sports involving striking) in which two of the three judges rank one fighter as the winner, while the third judge scores for the other fighter. Many times, a split decision causes controversy due to its lack of unanimity. As a result, especially in high-profile or title bouts, the victor may be encouraged or pressured to grant a rematch, in the hopes a return matchup will give a more decisive outcome.