This study aimed to compare the metacognitive skill levels between successful and unsuccessful teams in the Turkish Men's Second Volleyball League in the season of 2017 -- 2018. Volunteer participants consisted of 133 volleyball players from eight Clubs' teams. The metacognitive skill inventory was used for data collection. Two components of this inventory are knowledge about cognition and regulation of cognition. First includes the sub-dimensions of declarative knowledge, procedural knowledge and conditional knowledge while second consists of the sub-dimensions of planning, information management strategies, comprehension monitoring, debugging strategies (DS) and evaluation. Mann Whitney U tests were used for two group comparisons while Spearman rank order correlations were performed to analyze the relations between team success and metacognitive awareness skills. This study showed that there was no significant difference with respect to metacognitive skills between successful and unsuccessful teams' mean values except DS. The mean of DS in top three ranking team was 10.58 % lower than unsuccessful teams. The difference indicates that top three rankings teams made fewer mistakes and thus have low DS while unsuccessful teams experienced more errors and they had higher DS. Execution volleyball skills without errors are critical factor for high performance.