"3-1 Line": 3 attackers at the net + penetrating setter — simplified equivalent of the 5-1.
1st tempo (quick)2nd tempo / back-row
Attack options
Centre quick (1st tempo)LOW
Attacker: MB1 · Tempo 1Left sideMED
Attacker: OH1 · Tempo 2Right sideMED
Attacker: OPP · Tempo 2Beginner
The single setter in the back right (P1) penetrates as soon as the ball is hit, toward zone 2. This frees 3 attackers in front: left side, middle, right side (often an opposite). Simplified equivalent of the 6v6 5-1 — demanding on reception and setter speed, but the most offensive of the 3 4v4 systems.Intermediate
Typical defence: system A (1 central blocker + 3 defenders). The middle stays at the net to block, the 2 wings drop to the 3 m line, the setter gets back to the back right to defend the short diagonal.