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From the blocks, 1 and 2 close out diagonally on coaches (stagger the start), with one hand high (inside hand) and one hand out (baseline hand), then slide to the corners with hands out wide, and change lines.
3 and 4 go when 1 and 2 start their slides [option - 3 and 4 pitter patter until they close-out].
Coaches can jab or ball fake.
See Defending -
Nash triangle slides,
Fratello 4-player close-outs,
Two-man close-outs.