Cable fly from a low angle that maintains constant pec tension at the stretched position. The low anchor point emphasizes the clavicular (upper) pec fibers and scores 11/15 on stretch-under-load.
Low cable angle — shifts the force vector to emphasize the clavicular head and upper pec fibers.
Stretch-under-load 11/15 — at arms-wide position, the pecs are near-maximally lengthened under cable tension.
Tension continuity 19/20 — cable maintains the 6:1 pec lever ratio through full adduction ROM.
Placed fourth to open the chest block with constant-tension cable work.