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Anatomy MapThe 1-2-5-2 (Jab-Cross-Lead Uppercut-Cross)
Combinations•• intermediateOrthodox & Southpaw

The 1-2-5-2 (Jab-Cross-Lead Uppercut-Cross)

A four-punch sequence that strategically changes levels mid-combination to exploit the opponent's guard adjustments. The 1-2 drives the opponent backward or into their defensive shell, the lead uppercut attacks from below as they tighten up high, and the final cross capitalizes on the vertical disruption. Biomechanically, this combination uses the opponent's own defensive reaction against them — a tighter guard creates a better target for the uppercut.

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Reviewed by Coach Josh · Last updated June 2026
Anterior DeltoidsTricepsBicepsObliquesQuadriceps
Video Demo Coming Soon

When to Use

Use when the opponent consistently shells up after absorbing your initial 1-2 by pulling their gloves tight to the temples. The uppercut travels under the compact guard that straight punches created, lifting the chin and hands upward to open a clean lane for the finishing cross.

Execution Steps

  1. Throw a standard 1-2 combination with full commitment to drive the opponent backward or force them into a tight defensive shell, using the jab-cross to establish your offensive presence.
  2. As they shell up, dip 3-4 inches by bending the knees and throw a lead uppercut upward under their tightened guard, aiming for the chin or solar plexus depending on the guard height.
  3. As the uppercut disrupts their guard vertically and lifts their chin, immediately fire a straight cross through the center of the opening before their hands can return to position.
  4. Return to guard and assess — if they are still shelled up, the sequence can be repeated; if they have dropped their hands, transition to hooks.

Coaching Cues

"1-2 drives them back, 5 lifts the guard, final 2 finishes."
"Bend the knees for the uppercut — not the waist."
"The final cross is the kill shot — don't waste it."
"Step forward on the uppercut to close retreating distance."

Pro Tips

  • The 1-2-5-2 is devastating against tall fighters who lean back defensively on the 1-2, because the uppercut catches them as they return to the upright position with their chin exposed and hands high.
  • Make the uppercut fast and sharp rather than loaded for power — it is the setup punch that creates the opening, and the final cross is where you invest your maximum power for the finish.
  • Step slightly forward on the uppercut to close the distance the opponent created by backing up from the 1-2, ensuring the final cross is in range rather than falling short.

Conditioning Drills

  • Heavy Bag: 5 rounds of 3 minutes building the full four-punch flow, emphasizing the level change between the cross and the uppercut.
  • Dumbbell Uppercuts: 3 sets of 15 reps with light dumbbells, performing fast uppercut motions to build the transition speed between straight and upward punches.
  • Mitt Work: 3 rounds of 3 minutes where the coach retreats slightly after the 1-2 to simulate the opponent backing up, forcing you to close distance on the uppercut.

Gym Workout: 1-2 Fluidity & Speed

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Common Mistakes

  • Not dipping the knees for the uppercut, instead throwing it with just the arm, which removes the upward leg drive that gives the uppercut its penetrating power under a tight guard.
  • The final cross being lazy and half-powered after three preceding punches, wasting the clean opening the uppercut created — the cross is the payoff punch and must carry full rotational force.
  • Over-committing forward during the four-punch sequence and losing balance, which prevents you from following up with additional punches or defending against the inevitable counter.
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Follow-up Techniques

Follow with Lead Hook

Related Techniques

The 1-2 (Jab-Cross)CombinationsLead UppercutPunchesThe Cross (Straight Rear Hand)PunchesThe 1-2-3-2 (Jab-Cross-Hook-Cross)CombinationsInside FightingRing IQ

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