Defender under the rim. Coach calls: 'normal' (sprint then break down), 'hard' (full sprint, no break), 'soft' (slow approach, big arc). Each has its situation.
Not every closeout is the same. Trains situational awareness most players never develop.
Normal: sprint 2/3, choppy steps last 1/3.
Hard: full sprint, contest only, accept the drive.
Soft: arc around to prevent drive.
Shooter reads the closeout type.
Wrong closeout = wrong defence.
Shot-fake-and-drive counter. Live 2v2 with closeouts. Pair: shooter and defender switch every 5.