The triple jump is an athletic event consisting of three phases which are hop, step, and jump. According to the reversibility training method, that reveals when these athletes can’t be able to maintain their physical fitness and performance properly, it influences for their performance negatively. This study was to identify how the athletes maintain the performances and how they obtain the performance prediction using the biomechanical method during the COVID-19 period in Sri Lanka. Those data were collected from five National standard male triple jumpers. The mean age of the participants is 26. The triple jump technique was done by using the dynamic equation which included kinematic variables for flight phase of the above three phases. The Matlab17 software was used to optimize the flight phase. Three cameras (100Hz) were used to observe the coordinates of center of mass and kinematics variables on the sagittal plane. The videos were analyzed through the Kinovea (0.9.3 version) software. The hop dominated balance technique (35.5: 30.4: 34.1) was used for the prediction. The previous performances values of the players were 14.32m to 16.07m (Before 2020). Current COVID-19 period performances were 13.13m to 15.43m. The velocity and angle were optimized by 5% and +20 outcome of the players were more than 16m. Considering this study, athletes’ phases weren’t in the optimum phase ratio. The hop dominated balance performance prediction and players’ current and previous performances were significantly different in this study. Through this research all coaches and athletes can identify their shortcoming phase and values of the optimization variables and prediction performance level. If not, coaching techniques and tactics can be modified.