Posterior Deltoids
Punch Retraction
The rear deltoids pull the arm back after a punch. Rapid retraction prevents being countered. Weak rear delts lead to lazy jabs.
Techniques Using The Posterior Deltoids
Lead Hook
A devastating short-range punch thrown in a lateral arc, powered by violent core rotation rather than arm strength. The lead hook is often considered the most dangerous knockout punch in boxing because it targets the jaw from an angle the opponent cannot easily see. Its power comes from the whip-like rotation of the entire body — foot, hip, core, and shoulder firing in rapid sequence.
Rear Hook
A powerful hook thrown with the rear hand using the full rotational force of the hips and posterior chain. Less common than the lead hook because of the longer travel distance, but devastating when landed because it carries the weight and torque of the entire rear side. Particularly effective as a body shot weapon, the rear hook to the liver is one of the most debilitating strikes in boxing.
Overhand Right
A looping rear-hand power punch thrown in a wide, arcing trajectory over the top of the opponent's guard. The overhand bypasses the traditional high guard by traveling over the shoulder line and connecting at a downward angle. High risk and high reward, it is the signature knockout punch in both boxing and MMA, made famous by fighters like Manny Pacquiao and Deontay Wilder who use it as a fight-ending equalizer.
Philly Shell (Shoulder Roll)
An advanced defensive stance where the lead shoulder is raised to deflect straight punches while the rear hand stays high to catch anything the shoulder misses. The Philly Shell — also called the Shoulder Roll — was popularized by Floyd Mayweather Jr. and is the hallmark of elite counter-punchers. It works by using the rounded lead shoulder as a deflection surface that causes punches to glance off rather than land cleanly, while keeping the counter hand loaded and ready to fire through the opening created by the deflection.
Shoulder Roll
The act of rotating the lead shoulder upward to deflect incoming straight punches, letting them slide off the rounded surface of the deltoid rather than blocking them with the gloves. The shoulder roll is the core defensive mechanic of the Philly Shell stance and allows the fighter to deflect punches while keeping the rear hand loaded and cocked for an immediate counter, making defense and offense one seamless motion.
The 3-3-2 (Lead Hook-Rear Hook-Cross)
A double-hook power sequence that attacks the opponent from alternating lateral angles before driving a straight punch through the disorganized defense. Two hooks from opposite sides overwhelm the guard's ability to track lateral threats, and the cross finishes through the center while the opponent is still processing the bilateral disruption. Roberto Duran used double hooks to systematically dismantle opponents's guards before driving straight punches through the wreckage.
The 1-Overhand-3 (Jab-Overhand-Hook)
The jab fixes the opponent's attention and guard position, the overhand arcs over their raised hands to land on top of the guard or behind the ear, and the hook catches them as they react to the overhand's impact. This is a high-commitment distance-closing knockout combination that bridges the gap between long range and the pocket in a single explosive entry. Manny Pacquiao used this sequence from the southpaw stance to devastating effect, closing distance against bigger opponents who thought they were safe at range.