Every coach talks about "pace and space." But spacing is more than standing behind the three-point line. It is about where your players stand so the ball handler has a lane to drive and one defender can't guard two.
The double gap is one of the simplest ways to teach it.
Understanding Basketball Spacing: Single vs Double Gaps
To understand a double gap, we must first define our spacing templates. In a standard perimeter setup, a single gap represents the natural distance between two adjacent offensive players. For example, one player positioned in the corner and the next player positioned at the "45" or wing.
A double gap, on the other hand, occurs when that adjacent spot is intentionally left empty. If a player is standing at the slot and their nearest teammate is all the way down in the corner, leaving the 45 completely unoccupied, they have created a double gap. The double gap stretches the help defense so 1 defender can't guard 2 offensive players.
Within Transforming Basketball we use 2 spacing shapes:
"Clear" = 5 out. All 5 players are outside the 3-point line. The picker or screener can be inside the 3 if they are initiating the trigger.
"Short" = 4 out 1 in. 4 players out, and 1 player inside in the dunker spot. This spacing naturally creates double gaps.
Why double gaps work
It comes down to a core offensive principle: One Can't Guard Two.
- Increased Closeout Distance: Help defenders have to travel a long way to stunt at a drive and recover if the pass is made.
- Increase Gold Medal opportunities: By having someone in the dunker, this allows the ball handler to finish or pass inside for a rim finish. Whereas when everybody is spaced in "clear", the pass will usually be a kick out.
How pass and cut motion removes double gaps
Many traditional youth and high school offenses take double gaps away by design. In a standard "pass, cut, and fill" motion offense, players are taught to automatically cut to the basket after making a pass and then replace empty spots on the perimeter.
It looks organized, but it removes space. When an offensive player is driving into a gap, an automatic fill cut drags a gap defender straight into the driving lane. With cutters always in the paint, the ball handler's advantage disappears. Instead of reading the defense and holding their space, players run a memorized pattern that helps the defense stay in position.
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2 ways to create double gaps
Here are two ways we create double gaps without a set pattern:
1. Use the weakside dunker spot
You don't need a strict "5-out" offense to space well. Put a player in the weakside dunker spot (short corner and baseline area). Their defender has to stay near them, and the ball handler on the perimeter gets a double gap to attack 1-on-1.
2. The Blast Cut
A blast cut is a hard cut where an offensive player cuts from a double gap into a single gap to receive the basketball.
- Forward Momentum: Because the player is sprinting into the open space, they catch the ball on the move.
- Triggering Advantages: We utilize the blast cut as a trigger for youth teams to force the defense into difficult closeout situations in a 1v1 on the move.
Example of a Blast Cut from a double gap into a catch-and-go situation. (see SSG below)
Coaching double gaps with the constraints-led approach (CLA)
Here are 3 SSGs that use "short" spacing and double gaps.
1. 1-on-1+1 Blast Cut (or Blind Blast Cut)
Players catch the ball on the move and attack, instead of catching standing still. We call it a "dynamic solo."
- Setup: The offensive player starts in the corner (a double gap) and makes a blast cut to the 45-degree wing (a single gap) to receive a pass from the top of the key. The game is live as soon as the ball is caught.
- Blind Variation: To increase difficulty, have the defender face the baseline. The offense taps the defender's hands and blasts toward the wing; the defender can only turn and trail once their hands are tapped. (see video above)
- Constraints & Scoring: Play "make it take it". Limit the offense to a maximum of 3 dribbles or a 4-second shot clock. To encourage aggressive downhill attacks, award double points if they score using a "stampede" dribble (running through the catch).
2. 5-on-5 Full Court: Turtle or Mouse
This game takes the solo into 5-on-5. The team has to space the floor to isolate a weaker defender. Coaches can assign a "turtle" (or "mouse") by having that player play on-ball defense with their hands behind their backs. The offense has to look to get the "turtle" to guard the "target" player, either through cross matches in transition or by switching in PnR.
- Setup: The defense is instructed to switch on pick-and-rolls.
- How it Works: The offense must use actions (like a pick-and-roll) to intentionally create a mismatch. Once the mismatch is created, the team must space the floor properly ("short") and generate dominoes by using a "Turtle" or "Mouse" solo attack.
- Constraints & Scoring: Play games to 12 (using 2s and 3s).
3. 2-on-2 Solo - Train Start
Players start in a train inside the paint: offense, defense, offense, defense. The ball handler attacks the double gap if it is there, or makes a quick whip pass to their teammate if the defense helps too much.
- Setup: Offense spins the ball out. Off ball player can choose to go single or double gap away. Ball must touch the paint before it can be passed.
- Constraints: Constrain the number of dribbles.
For more games that teach spacing through play, our small-sided games guide has a full library, and Spacing 101 covers the core spacing principles behind single and double gaps.
Further Learning
If you want to see exactly how these spacing concepts look in a live practice setting, watch the Transforming Basketball YouTube video, "How to Teach Basketball Spacing Using the Constraints-Led Approach". It shows how we change constraints so players look for these driving lanes on their own.
For more games to use in your sessions, see our Small-Sided Games (SSG) Book.
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