Shell breakdowns
 | 1 Breakdown drills building up to 4-on-4 or 5-on-5 shell (see Defending - 4 on 4 shell). Start with one defender, then 2-on-2 and 3-on-3. - post upTo control a drill (e.g. with young players), use one or more coaches as attackers, then replace coaches with players e.g. to go live. 1) One defender Defensive situations, - close out, jump to the ball - gap position, help and recover on dribble penetration - basket cut - help position - skip pass, help on baseline penetration, smash a weakside flash. See Defending - 1 on 1 with passers, 3 on 1 shell, Villanova jump to the ball, PGC 5-point, 4 on 1 shell, Celtics jump to the ball, 1 on 1 - Ganon Baker give and go. |
 | 2) Two defenders a) 2 on 2 gap Attackers are one pass apart, defensive situations, - close out, jump to the ball - gap position - help and recover on middle penetration. See Defending - Izzo jump to the ball, Woodley 2 on 2, Nash 2 on 2 help and recover, Schepp closeouts, Spurs shift and close, Jr. NBA Defence (2 on 2 shell). |
 | 3 b) 2 on 2 skip Attackers use skip passes, defenders close out and jump to the ball into a help position. See Defending - Hollins skip passes, Skip pass 2 on 2, also Philly Closeouts. |
 | 4 Progression - help on a baseline drive. See Defending - 4 on 4 circles, 1 on 1 - Pasquali corner-wing cuts. |
 | 5 c) 2 on 2 plus coach Additional defensive situations, - gap and help positions - help and recover if coach drives from the top - contest basket cuts from the wings - coach can dribble to a wing, push 2 or 3 through. See Defending - 2 on 2 shell, Duke two-man contesting wide, Villanova 2 on 2 whack-out, 2 on 2 help rotation, Denial both sides, Huggins sprint to help. Variation - two coaches, see 4 on 2 closeout with help. |
 | 3) 3 on 3 a) With coach Putting a defender on coach adds the option of defending middle drives from the wings. See Defending - Husky closeouts, Huggins sprint to help. |
 | 7 Can also help the helper on baseline penetration. Here coach has dribbled to the wing and waved through 2. Variation - X3 stays with 3, X1 runs through to take 2, a run and jump switch. See Defending - 4 on 4 circles, Fratello 3 on 3 drive and kick, 3 on 3 kick-out, Spurs shift and close, also Attack/defend - Pasquali 3 on 3 advantage. 3 then 2 can pass to coach from the top and basket cut, see Defending - Woodley 4 on 4. |
 | 8 b) Replace coach with a player, add pass and cut from the top, jump to the ball. See Defending - Procopio 3 on 3 shrink, Spurs shift and close, Jr. NBA Defence (3 on 3 shell).  |
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