The aim of this study was to enhance the game performance of player S, the setter for the Ts University men's volleyball team, who was having problems with respect to “using combination attacks purposefully to limit the number of blocks by the opposition”-which is one of the main responsibilities of the setter-by using the “Performance Evaluation Criteria for Setters”. In order to achieve this aim, we analyzed the game performance of player S for the fall season. Based on this analysis, we derived some goals for improvement that were required for combination attack setting. Next, we worked on theoretical issues in player S's game in the light of what we had clarified. This corrected combination attack setting method was then put into practice in the fall season league games. We then examined the game performance of player S in the fall and spring seasons, and compared the results. This analysis showed that, when setting for combination attacks, those in which the hitters do not cross paths and where the setter was in the front row with only two front row hitters had a significantly higher rate of compliance with the evaluation criteria in the fall season than in the spring season. It therefore followed that there was a significant increase in the rate of compliance with the evaluation criteria for all combination attacks. As a result, it can be concluded that this study's aim of improving the game performance of player S with respect to “using combination attacks purposefully to limit the number of blocks by the opposition,” using the “Performance Evaluation Criteria for Setters”, was successful.