This is just as much a drill for A; they need to get used to reacting quickly to the options available and completing the pass to B
Allows the cutter to either cut deep or under on the open side, and teaches the thrower to react quickly to opportunities
A handler, A, starts with the disc in the middle of the width of the field, marked by D1. A cutter, B, starts 5-10m downfield of A, guarded by D2.
D1 > A > D2 > B