The problem of this study was to investigate the resilient effects of selected string tensions in various types of tennis rackets. The rackets selected were the Wilson T-2000, Head Professional, Head Master, Dunlop Fort, Dunlop Austral, and Yamaha Composite. Each racket was randomly strung and tested at 45, 52.5, and 60 pounds of string tension. The testing involved dropping a tennis ball 100 inches onto the racket face, which was stationary, and measuring the height of the ball bounce. The data collected from the rackets and string tensions were analyzed by the analysis of variance and the .05 level of confidence was used to determine significance. A significant difference occurred between the Head Professional and Wilson T-2000 and the Head Professional and Yamaha Composite. Significant differences occurred between all three string tensions.