This article reflects the experimental argumentation regarding the development influence of coordinative capacities upon the technical - tactical training level of the junior rugby players in the preparation process. According to assumption regarding the use of development ways of coordinative capacities of junior rugby players within the sports training which will influence on their technical and tactical potential, in this way it was developed the program of training for athletes of 16-17 years old, which includes specific methods and specific means for development of coordinative capacities. This program was suggested to experimental group, while the bystander group has followed the traditional training. The both of the groups were checked at the beginning and the end of pedagogical experiment at 5 technical and tactical indices, those results being arranged in a mathematical and statistical way and showed in a tabular and graphical way. Analyzing the final results, we can conclude that the assumption submitted at the beginning of our researches was confirmed, which improved all the technical and tactical indices through the implementation of coordinative capacities development means in the training process of 16-17 years old junior rugby players.