Go Under
The on-ball defender goes under the screen (between screener and basket), conceding space but staying in front.
When It's Used
When the ball handler is a poor shooter and the priority is taking away the drive — going under gives up the jumper but stays between ball handler and basket.
About This Action
The "Go Under" defensive technique in pick-and-roll situations involves the on-ball defender navigating *between* the offensive screener and their assignment, the ball handler. As the screen is being set, the defender anticipates the contact point and proactively ducks their shoulder and body *below* the screener's extended arms, shuffling quickly to maintain a position slightly behind and to the side of the ball handler's hip. This action intentionally concedes the perimeter jump shot, prioritizing the prevention of a straight-line drive to the basket or a "turn-the-corner" acceleration that can break down the defense. The primary objective is to stay "attached" to the ball handler's trailing hip, forcing them to take an uncontested, often less efficient, mid-range or long-range shot. This defensive choice is deeply rooted in personnel scouting and strategic intent. It is almost exclusively deployed against ball handlers known to be poor or reluctant perimeter shooters, where the expected offensive outcome of an open jumper is statistically unfavorable for the opponent. By sacrificing shot-contesting at the point of attack, the defense effectively eliminates the driving lane, keeps the ball handler out of the paint, and avoids triggering complex help-side rotations from off-ball defenders. This simplifies the defensive responsibility, as the screener's defender typically drops back (in a "drop" coverage) to protect the rim, confident that the on-ball defender will recover to deter any pull-up attempt from a non-threat. From a broader game perspective, "Go Under" is a foundational, yet highly specialized, pick-and-roll coverage. Its effectiveness hinges entirely on accurate intelligence about the opponent's shooting capabilities. Executed correctly against the right personnel, it forces the offense into a predictable, low-percentage action. However, against a capable shooter who can convert pull-up or step-back jumpers consistently, employing a "Go Under" scheme would be strategically disastrous, gifting easy points and collapsing defensive morale.