3 attackers have a ball + 1 defender lined up as in the picture on the right.
The defender starts tipping in the middle of the bucket.
The coach calls out the name of one of the attackers (or a number).
When the name is called, the defender sprints to the right attacker and follows one of three commands:
X1 dribbles via the baseline 2 to 3 dribbles. The defender takes a charge here.
X2 makes a shot fake, the defender makes a close out. Later expand to fake + dribble.
X3 dribbles from the baseline to the basket. The defender has to close out the baseline here.