The purpose of this study was to analyze the unforced errors in the performances of Tennis players. For the purpose of this study 26 male tennis players were selected who had participated in All India Intervarsity Tennis Men’s championship held in Jiwaji University, Gwalior 2008-09. The following measures were selected in analyzing the unforced error in Tennis; First serve, Second serve, Foot fault, Fore hand drive fault, Back hand drive fault, Smash fault, Back hand slice and Fore hand slice. The tester competency was evaluated together with the reliability of the tester by analyzing the performance of the 26 players of All India Intervarsity tennis Men’s championship. The data was collected for each criterion measure by seen the match performance during the All India Intervarsity Tennis Men’s championship. For the critical analysis of unforced error in the performance of All India Tennis players ‘t’-test was employed. The level of significance was set at 0.05.The finding of the study revealed that The players of All India Intervarsity Tennis Men championship did not show any statistical significant differences in unforced errors related to first service fault, second service fault, foot fault, forehand drive fault, backhand drive fault, smash fault, backhand slice fault & forehand slice fault. This may be attributed to the fact that they have comparatively same level of skill & technique and are playing in a same competition.