Tunnel Ball

Choose this exercise

Purpose: Practice spatial coordination and team defense within defined physical boundaries.

Use it when: Use during active physical sessions, gym programs, or outdoor team breaks to build group coordination.

Skip it when: Skip when space is limited, when hard floor surfaces make throwing unsafe, or when participants require a low-exertion, seated activity.

Group arrangement: Two equal teams (offense and defense); any participant may choose a non-throwing support role (scorekeeper, referee, or cone setter)

Timing: Based on the 10+ minute duration in source records, timed here at 15 minutes for two full rounds and debrief.

Materials and tools

• Chalk or painter tape for marking concentric boundary circles
• 3 cones (target cones)
• 3 soft dodgeballs or foam balls
• 1 stopwatch or clock

Before participants arrive

1. Mark a small inner circle roughly 2 meters in diameter using chalk or painter tape.
2. Mark a larger concentric outer circle roughly 6 to 8 meters in diameter.
3. Place the 3 cones upright inside the small inner circle.
4. Place 3 soft dodgeballs near the outer boundary.

Say this to open

Welcome to Tunnel Ball. We have two boundary zones. The defense guards the ring between the circles to protect the three cones in the center. Stepping inside the small inner circle is a foul. The offense stands outside the large circle and throws soft balls underhand to knock the cones down. All throws must be underhand. Defense, block shots with your torso, arms, or feet while keeping your balance; never block with your head. If a ball stops in the center circle, one defender retrieves it and tosses it back outside. Anyone who prefers a non-running role can serve as referee, scorekeeper, or cone setter.

How to run it

1. Set boundaries and safety rules 3 minutes

   Speak the opening script. Demonstrate legal underhand throwing and safe blocking using hands, torso, or feet below shoulder level. Invite anyone who prefers not to throw or run to take scorekeeper, referee, or cone setter roles. Divide remaining players into two equal teams: Offense and Defense. If numbers are uneven, place the extra player on defense. Defense enters the ring between circles. Offense spreads around the outside circle. Hand the 3 balls to the offense.

2. Round 1 gameplay 5 minutes

   Start the clock. Offense passes around the perimeter and throws underhand at the center cones. Defense blocks shots within their ring without stepping into the inner circle. Knocked-over cones stay down. If a defender knocks over a cone or steps into the inner circle while blocking, that cone counts as down. If a ball stops in the center circle, one defender retrieves it and tosses it outside. Round ends when all 3 cones fall or at 5 minutes.

3. Role switch and Round 2 5 minutes

   Reset the 3 cones upright in the inner circle. Swap team roles: the offense moves into the defensive ring, and the defense moves outside the perimeter. Active support roles may rotate if desired. Run a second 5-minute round under identical rules. Stop play when all 3 cones fall or when time expires.

4. Cool-down and debrief 2 minutes

   Collect all balls and cones. Gather the group in a semicircle. Ask 1 to 2 debrief questions, taking up to 3 brief reflections from the group to close.

Debrief questions

• What defensive strategy helped your team cover the most space?
• What passing tactics helped the offense find open throwing angles?

Finished output: Completion of two timed rounds tracking how many cones were knocked down per side.

Remote

Not runnable online as designed. Tunnel Ball requires physical circular boundaries, live ball trajectory, and physical blocking. For a virtual team coordination activity, run a turn-based digital whiteboard puzzle or grid strategy game instead.

Hybrid

Hybrid delivery is not recommended due to the physical nature of boundary defense and throwing. If remote members are present, they can track round timers, announce cone counts, or offer tactical observations between rounds over video call.

Access and participation choices

• Participants may opt out of running or throwing at any time to serve as referee, cone setter, or scorekeeper.
• All throws must be underhand to maintain control and reduce impact.
• Anyone needing to pause can step outside the circle at any point without disclosure.

If the session gets stuck

Defenders accidentally kick or knock over their own cones while backing up.

Remind defenders that stepping into the inner circle is a foul. If a defender knocks a cone down, it counts as down for the offense.

Offensive players hold balls and hesitate to throw.

Add a 5-second rule requiring any player holding a ball to pass or throw within 5 seconds.

Terms used here

• Tunnel ring: The circular zone between the outer perimeter and the inner circle where defenders move.