Tennis is a rally game. Whoever can keep the ball in play longest wins. Rally to 10 is the simplest cooperative game: two players, count every shot, restart at zero on a miss. This builds consistency, the foundation of match play.

What you need: Tennis balls (green for 11-12), racquets, full court.

Setup: Two players on opposite baselines.

How to run it:

  1. Player A starts the rally with an underhand feed (no serve).
  2. Players rally back and forth. Each successful shot counts toward a goal of 10.
  3. If anyone misses (ball out, in the net), restart at zero.
  4. Goal: rally of 10 in a row. Then 15. Then 20.
  5. Record the longest rally of the day.

What to watch: Are they trying to hit winners or just keep the ball in? Cooperative rally is about keeping the ball in. Don’t aim for power.

If they’re struggling: Smaller court (service boxes only). Bigger margin for error.

If they’ve got it: Add target zones. Each shot has to land in a specific zone (cross-court only, for example).