Reactive Agility

Having good strokes is important, but being able to get to the ball is even more important. If you can’t reach the ball and prepare in time, your stroke quality doesn’t matter. In fact, your ability to get to and prepare for the ball ultimately determines your skill level.

Reaction time depends on both change of direction speed (CODS) and reactive agility (RAG)—the ability to read and react. If either is slow, overall reflexes are affected. Several factors influence reaction time:

1. The state of the eyes
2. Age
3. Speed of nerve signal transmission through the central nervous system
4. Processing time between sensory and motor response (improves with repetition)
5. Transmission time from nervous system to muscles
6. Muscle response time and elasticity
7. Ready position and balance
8. Athletic experience
9. Mental state (focus, nerves, fatigue)

Players with slow reflexes cannot react to the ball speeds they are capable of producing. While they can compete below their true hitting level, their reflexes will lag behind. This creates a direct relationship between reactive agility and performance—players with slower reflexes tend to be less accurate and make more errors.

Understanding a student’s ability to read and react is critical. Teaching advanced topspin techniques to players with slow reflexes often leads to slow match-play improvement. These players struggle to process incoming information quickly and must rely on shorter backswings to compensate.

When working with players who have slower reflexes, coaches should protect them by:

1. Building a defensive foundation using underspin to improve consistency
2. Entering them in competitions below their maximum level to allow success

Being more compact and controlled increases consistency—the golden rule of tennis. This also helps players manage pressure more effectively.

Topspin still has its place, especially against weaker shots. However, without a strong defensive foundation, topspin can limit competitive success. A common drill demonstrates this:

When students use underspin, they often sustain long rallies (e.g., 20 shots before 10 errors). With topspin, the results typically reverse, with more errors than successful shots. This highlights the importance of tracking and reaction time in technical performance.

Improving Reactive Agility Skills

It can be tempting to rely on non-reactive drills for players with slow reflexes, but fast-paced rally drills are more effective. Improving visual perception is critical.

Returning serves is one of the best ways to develop reactive agility, as it challenges reaction time under pressure. Playing one-bounce doubles also promotes faster reflexes and better concentration. Drills should include variability—such as two possible feeds instead of predictable ones—to better train reaction skills.

Be a Good Coach Rather Than a Demanding Teacher

Players with poor reactive agility are often highly motivated. Their challenges usually stem from physical or neurological limitations—not effort. Coaches should remain positive and supportive. Taking an interest in players as individuals—not just athletes—improves both performance and relationships.

Many top players have overcome slow reflexes. Monica Seles and Sofia Kenin are notable examples. Kenin, in particular, compensated with exceptional anticipation and focus. Traditional talent models based on hours played are often inaccurate. Boris Becker famously failed early evaluations before winning Wimbledon just two years later.

Performance = talent × commitment² + training
(Training includes coaching knowledge, experience and teaching quality.) This model explains why players who outwork their peers often succeed—effort and environment can outweigh natural talent.

Summary

Reactive agility plays a major role in both development and performance. To improve learning and match results, training should consistently include drills and games that require players to read and react to unpredictable situations.