Introduction; The aim of this research is to determine the effect of instructional games in judo on claw strength, which is one of the basic features of judo, by their goal-directed application. Method; with this purpose, in the January of 2009, a pretest was carried out on 37 male sportsmen who were taking judo training in Edirne (experiment group) and Tekirdağ (control group). At the end of the training programme which was applied on these sportsmen for 12 months; the improvement of the sportsmen was identified and in January 2010, their final tests were performed. The comparison of Experiment and Control male groups‟ pretests, the comparison of Experiment and Control male groups‟ final tests, and one way variance analysis (One way ANOVA) were used among the data we have acquired through our research. A comparison was carried out between Experiment and Control groups and a difference of p<0,05 and p<0,01 was expected to be found out. From anthropometric tests, height, body weight, circumference of hand wrist, circumference of foot wrist, length of the hands and feet tests have been applied on the sportsmen to get their measurements of Pre and Final Tests. Results: while a significance of p<0.01 was found in the pre and final test parameters of the experiment group male judokas in the province of Edirne, no level of significance was detected in the pre and final tests of the control group male judokas in the province of Tekirdağ. No significance was detected in pre and final tests of the experiment group male judokas in Edirne and the parameters of pre and final tests of the control group male judokas in Tekirdağ. Conclusion; We can say that the claw strength of the sportsmen who participated in judo instructional games improved, having shown a significance of p<0,01 in comparison to those who did not. Therefore, it can be said that the judo instructional games which are played in the context of basic judo training programs in order to improve claw strength