The Effect of "Precision with Tempo" Exercises on the Accuracy of Groundstroke Punch Techniques in the Tennis Students Activity Unit of Yogyakarta State University In Proceedings of the 3rd Yogyakarta International Seminar on Health, Physical Education, and Sport Science in conjunction with the 2nd Conference on Interdisciplinary Approach in Sports YISHPESS and CoIS - Volume 1, 669-674, 2019 , Yogyakarta, Indonesia