The double drag, 77 in NBA shorthand: both bigs trail into stacked ball screens before the defense is set. 1 pushes right of center, corners filled, 4 and 5 coming up behind the ball.

4 and 5 set the double drag, offset a step so X1 has no gap to slide through. Whoever gets there first screens first, usually 4 first and popping, 5 second and rolling.

1 comes off both screens going left, downhill. If X1 ducks under the screens, 1 pulls up. If X5 steps up late to hedge, 1 splits between the two screeners, because the hedger left his man behind.

5 rolls to the rim and 4 pops to the top. The read is the second screener's defender. He can take the roll or the pop, not both, and neither corner defender can help without giving up a three.

X5 drops with the roll, so 1 throws back to 4 at the top. The throwback is hard to deny because X4 was the first screener's man and is two steps behind the play.

4 shoots the trailer three. The counter when the defense switches the second screen is to attack the switched big off the dribble and take him to the far side before the defense can trade back.

Horns alignment: 1 at the top with the ball, 4 and 5 at the elbows, 2 and 3 deep in the corners. Both elbows are screens waiting to happen, so the defense cannot push 1 away from the pick, and with both bigs high there is nobody protecting the rim.

5 steps up and sets the ball screen on 1's defender, angled to send 1 right.

1 attacks off 5 to the right and 4 pops to the left slot. 3 leaves the right corner and zippers up the lane. He times his arrival for the moment 5 starts to roll.

The Spain screen. 3 sets a back screen on 5's defender, the drop big waiting in the lane for the roll. 3 gets set before 5 leaves the screen.

5 rolls to the rim behind 3's back screen. 3's screen catches the drop big from behind, and the roll is free.

1 throws the lob to 5 while 3 pops to the top after screening. The full read: lob to 5, pitch to 3 at the top if his defender helps on the roll, or 1 keeps the drive if both defenders collapse.

5 finishes the lob. If the defense switches everything, 3's defender is on 5 at the rim and 5's defender is chasing 3 to the arc. Both are wins.