This study analyzed the results of the advantages and disadvantages to request timeouts for the excellent volleyball coaches in a game. The samples were taken from the coaches of the men's and women's volleyball teams during the 285 sets, 76 games in the volleyball games of the Athens Olympic Games in 2004. The statistical results were analyzed and tested for the influential relationships between the different variables by the descriptive statistics of the frequency distribution, the percentage, the mean, and the standard deviation and by the two-way analysis of variance. If the variances produced the interaction, they were effective analyses in their respect and the Scheff's method was used to make the post-hoc comparison for understanding the differences. The probability-value in each statistical test is set in α=.05. Several findings of this research were found. First, the timeout usages in the lost teams were higher than the winning ones for both the coaches of the men's and women's. Second, the frequencies of timeouts for the coaches of the men's and women's teams did not have the apparent differences. Third, on losing two points continually, the frequencies of requesting timeouts for the coaches of the men's and women's teams reached the top. Fourth, for the effect of gaining points after requesting timeouts, the men's teams were higher than the women's. Fifth, on the effect in the span of timeouts and gaining points after requesting timeouts, the late stage in the span of timeouts was the best, and the mid-stage in the span of timeouts was the worst. Sixth, through the analysis of the two-way analysis of variance, the score lag of timeouts produced the interaction caused by the men's and women's coaches in the games. According to the analysis of two variances and the post-hoc comparison, in using timeouts for the coaches of the men's and women's teams, the sets lost in the women teams were higher than those of the men, but on the winning and losing sets in the score lag of timeouts through the post-hoc comparison, the sets lost in the men teams were higher than the winning ones, On the contrary, the winning sets in the women teams were higher than the lost ones. According to this research, the coach should fully control the application of the skill of timeouts in the game. The coach should request timeouts resolutely when he finds out the players play disorderly or the team keeps on losing, and the coach should direct the players in time to avoid missing the winning opportunity.