Every ball screen your team defends is a trade, and most of the time the trade gets made without anyone deciding it. The big does what he did last possession, the guard goes over because he always goes over, and the offense gets whichever shot the accident left open.
I drew the four coverages from the defense's side so the trade is visible. Each play states the coverage's rules, shows what it gives up on purpose, runs the offense's counter, and answers it with the coverage's own adjustment. Step through them and you'll see exactly where the help has to come from.
Drop
The rule: the big drops toward the rim, the on-ball defender chases over the top, and the handler is funneled into the big. The big's job is to be between the handler and the rim and the roller and the rim at the same time.
What it takes away: the layup and the roll. There's always a body at the rim.
What it concedes: the pull-up jumper from the elbow and the pick and pop. A handler who can shoot off the dribble lives in that gap, and a big who can shoot pops into open floor behind the play.
The offense's counter: the snake dribble. The handler comes off the screen, then crosses back over the big's drop to the other side of the lane, bringing his own defender into the big's lap. Now the big is guarding two men.
The coverage's answer: the on-ball defender goes under on the second screen and the big stays level with the ball instead of retreating, so the snake has nowhere to go and the pull-up is contested from the front.
Hedge
The rule: the big jumps out above the screen with his chest square to the handler for one count, slows or turns him, then recovers to the roller. The on-ball defender fights over the top and gets back in front.
What it takes away: the handler turning the corner. He never gets downhill with a head of steam.
What it concedes: the roll and the slip. While the big is out on the handler, the roller is going to the rim and somebody from the weak side has to tag him.
The offense's counter: the pocket pass to the roller the instant the big shows, or the slip before contact when the big shows early.
The coverage's answer: the weak-side low defender tags the roller for one count while the big recovers, and the handler's defender stays attached so the pocket pass has no window.
Switch
The rule: the two defenders trade assignments at the screen. The big takes the handler, the guard takes the roller. Nobody fights over anything.
What it takes away: the action itself. There's no gap to turn the corner into and no roll to tag.
What it concedes: the mismatch. A guard is now guarding the roller at the rim and a big is guarding the handler on the perimeter, and the offense gets to pick which one to attack. It also concedes the slip and the ghost screen, because switching defenders commit before contact.
The offense's counter: the roller seals the guard at the nail for the post entry, or the screener slips to the rim before the switch is called.
The coverage's answer: the switch is early and loud, the guard who switches onto the roller fronts him with help behind, and the big who switches onto the handler sits back and dares the shot.
Ice
The rule: on a side ball screen, the on-ball defender jumps to the high side of the handler and forces him toward the sideline and baseline, away from the screen. The big drops to the level of the screen on the baseline side and meets the handler there.
What it takes away: the middle of the floor. The ball stays on one side, and the help side never has to rotate.
What it concedes: the baseline drive into the big, the pick and pop from the screener left alone at the top, and the step-up screen, which puts the screen exactly where ice is sending the handler.
The offense's counter: the step-up. The screener flips his angle so his back is to the baseline and the handler comes off the screen toward the baseline, into the space ice opened.
The coverage's answer: the big is already at the level of the screen, so the step-up sends the handler into him, and the weak-side defender sinks to take the roller.
Picking one
The honest answer is that the best coverage is the one your big can execute. A few rules of thumb from my own teams:
- Drop if your big is slow or foul-prone and the handler can't shoot. It's the safest base coverage and the easiest to teach.
- Ice on side ball screens almost always, because it keeps the ball out of the middle and needs no rotation.
- Hedge if your big is quick and your weak side knows how to tag. It's the coverage that generates turnovers.
- Switch if your five defenders are close in size, or for one matchup you want to take away late in a game.
Most high school teams I know run drop as a base and ice the sides, then add a switch call for a specific action. That's three coverages, which is plenty.
Teaching it
Each coverage is a 2-on-2 drill before it's a team defense. The handler and the screener against the two defenders, with a coach calling the coverage. Then 3-on-3 with the tag, because the hedge and the switch don't work without the third defender. Then 5-on-5 against the actions you're about to see.
If you want to see what the offense is running against these, the zoom action guide walks through the ten handoff and ball screen actions these coverages have to answer.
Wrapping Up
Pick the trade on purpose. Decide what your defense gives up before the game, teach the big his rule and the weak side its tag, and the ball screen stops being a coin flip.
All four coverage plays are live in Elite Hoops. Step through one from the defense's side, watch the concession and the answer, and tap Save to put it in your playbook.
