Feeding a player forty identical forehands feels productive. Inside the session, it looks like progress — the strike gets cleaner every ball. The problem is what happens a week later, or in a match.
Variable practice looks worse and works better
Rob Gray's work with hitters, alongside a long line of motor-learning research, keeps producing the same pattern. Practice that varies the task — different pitch speeds, different locations, different sequences — produces slower, uglier sessions and better retention and transfer. Practice that blocks one thing repeatedly produces fast in-session gains that largely evaporate.
The mechanism is straightforward: a player who has only ever solved one version of a problem has learned one solution. A player who has solved thirty versions has learned to search for a solution, which is what a match actually demands.
What this looks like on a Primal Active court
- Vary the feed. Height, depth, spin and pace change ball to ball rather than block to block.
- Randomise the order. Forehand, backhand and approach are interleaved instead of drilled in tidy blocks.
- Constrain the outcome, not the technique. Score the drill by where the ball lands and what it does, and let the athlete self-organise the shape.
- Keep some blocked work. Early in learning a genuinely new shot, blocked repetition still has a place — it is a starting ramp, not the session.
Judging a session honestly
A good variable session feels harder and produces more errors than a blocked one. Coaches and parents watching from the fence should expect that. The question is not "did it look clean today" but "did it hold up next week, against someone trying to beat them".