Traditional sport was based on the ability of the players and less science and knowledge was considered. However, sport has become a profession and an industry. Therefore, the use of technology and analysis on data in order to achieve goals is very important. Classification is one of technologies to classify new incoming samples. Furthermore, sports produce considerable information about each season, teams, matches and players. Classification on sport data helps managers and coaches in order to predict the match result, evaluate the player performance, predict the player injury, identify the sports talent and evaluate the match strategy. There are many algorithms to predict the basketball results, track the health of players and determine the strategy of the match against different opponents, which help coaches a lot. Further, preprocessing procedure makes better dataset. In this paper, we use classification methods on sport dataset using preprocessing procedure and without preprocessing. The results show an improvement was obtained results using preprocessing. پرونده مقاله