Which sport relies on quick reaction time for success?

Tennis is a sport that heavily relies on quick reaction time for success due to its fast-paced nature. Players must respond swiftly to the ball, which can be hit at high speeds and from various angles. The ability to quickly assess the opponent's movements and anticipate their shots is crucial for effective gameplay. Reaction time in tennis not only affects service returns but also influences the positioning and timing of shots during rallies.

In contrast, while sports like running, swimming, and cycling involve speed and endurance, they do not require the same level of immediate and rapid responses to an opponent’s actions. For example, in running and cycling, athletes primarily focus on their own performance, pacing, and stamina rather than reacting to another player. Swimming, while competitive, follows a more scheduled and rhythmic pattern, where reaction time comes into play primarily at the start rather than throughout the race. Thus, tennis stands out because success hinges significantly on the player's ability to react quickly to a dynamic and unpredictable environment.