In combat sports, a decision is a result of the fight or bout that does not end in a knockout, submission or other finish, in which the (usually) three judges' scorecards are consulted to determine the winner; a majority of judges must agree on a result.
In most professional boxing and mixed martial arts fights, there are three judges.
If a judge feels that there was no clear winner in a round, they must award both fighters ten points.
At the end of the bout, each judge will tally the scores to determine which fighter had won, if any, according to the judge's tally; a fighter that "won" a majority of rounds usually emerges with more points.
If neither fighter "won" on at least two scorecards, the match is a draw; in championship fights, the champion usually retains the title in a draw, if not, it is "vacated" - the title belongs to no fighter and is vacant.