Tennis itself is primarily an individual sport. Even if you play mostly doubles, individual differences between players exist at all levels of the game. This concept is known in sport science as the principle of individualization. Research studies and coaching experience tell us that all athletes respond differently to training. That’s why many fields of study exist - from psychology, to motor learning and strength & power training - each attempting to answer questions that help us better understand human behaviour and the stress-adaptation process (and why there is so much variation in responses to the same training stimuli!).
