4-Out 1-In Motion Offense: The Complete Guide

If you have one good post player and four players who can handle and shoot a little, the 4-out 1-in motion offense is probably the best structure you can run. It keeps the floor spread like a 5-out, but it gives you an inside hub — a player who can post up, set ball screens, and screen for cutters. When coaches say they run "4-out motion," this is almost always what they mean.

What Is the 4-Out 1-In Motion Offense?

The name describes the alignment: four players spaced on the perimeter and one player in the post (the "1-in"). The four perimeter players run motion principles — pass and cut, dribble-at, screen away — while the post operates inside as a constant threat and a screening hub. It is a read-based motion offense, so the players react to the defense rather than running a scripted play.

Alignment and Spacing

Set the four perimeter players in two corners and two slots (or two wings and two slots), and place the post on a block or at an elbow. The spacing rule is the same as every motion offense: fifteen to eighteen feet apart. The key adjustment with a post on the floor is that the perimeter players must respect the post's space — nobody drives directly into the post's defender or the help is free.

The Post: High vs. Low

Where your post plays changes the whole feel of the offense:

• Low post. The post sits on the block for direct post-ups, duck-ins when the defense fronts, and offensive rebounding. Best for a strong, back-to-the-basket scorer.
• High post. The post plays at the elbow or free-throw line, opening the entire lane for backdoor cuts and drives, and becoming a passing hub for high-low feeds and dribble handoffs. Best for a skilled, passing big.

The Reads

Post Actions That Make It Hum

The post is not just a target — it is a screener and a connector. The best 4-out 1-in teams use the post to:

• Duck in across the lane when the defense turns its head, sealing for a quick interior catch.
• Set ball screens for the point, turning the motion into a pick-and-roll on demand. If you want to go deeper, see the pick and roll offense breakdown.
• Screen for cutters — a back screen for a slot drive, or a flare screen for a shooter.
• Flash high to receive and feed cutters going backdoor, the same high-post action that anchors the Princeton offense.

Why It Works

The 4-out 1-in motion offense gives you the best of both worlds: the spacing and driving lanes of a spread offense, plus an interior hub that defenses have to account for. It is flexible enough to feature a dominant post or simply use an average post as a screener and connector. And like all motion, it teaches reads, not memorized plays.

One good post changes everything. In 4-out 1-in you do not need that post to score twenty — you need them to seal, screen, and pass. Do that, and the four players around them get layups and open threes all night.

— Coach Lee DeForest

4-Out 1-In vs. 5-Out

The choice comes down to your roster. With no true center, the 5-out motion offense empties the paint and maximizes driving lanes. With one strong interior player, 4-out 1-in keeps that spacing but adds a post hub. If you have two bigs, step up to the 3-out 2-in motion offense. The principles — spacing, cutting, reading the defense — never change; only the alignment does.