This combination, Jab-Block-Front Upper-Back Upper, is an effective sequence that establishes distance, utilizes a defensive absorption to create an immediate opening, and then transitions into a devastating double vertical assault to split the opponent's guard.
Phase 1: Foundational Setup and Defensive Absorption (Jab - Block)
This initial phase focuses on establishing range and forcing the opponent to react, immediately followed by neutralizing their expected counter-attack.
- Jab (1): The combination begins with your most versatile tool, a quick, straight punch thrown with your lead hand. Its primary purpose is not raw power, but to measure distance, control the opponent by disrupting their rhythm, and create an opening. Mechanically, you execute this by rotating your front hip into your back leg and extending your front hand straight down the middle, aiming for about 90% extension without hyperextending the elbow.
- Block: After throwing your jab, you must anticipate your opponent's counter-punch. By keeping your guard tight, you perform a defensive block to absorb their punch, neutralizing their attack while remaining in position to launch your own follow-up. This defensive move is crucial for turning their offense into an immediate opportunity for you.
Phase 2: Double Vertical Assault (Front Upper - Back Upper)
Following the block, this phase exploits the opponent's vulnerability by attacking straight up the center with consecutive uppercuts from both hands.
- Front Upper (Front Uppercut): Immediately after absorbing the counter, you fire an uppercut with your lead hand. This punch is designed to come "up the middle" and break through a tight guard. As it lands, it is highly disorienting and forces the opponent to raise their guard even higher, which exposes them to further attacks.
- Back Upper (Back Uppercut): You immediately follow the lead uppercut with a powerful vertical shot from your dominant (rear) hand. This exploits the opening created when the opponent raises their gloves to defend high against the first uppercut. To generate the necessary maximum power for this shot, you must quickly bend your knees, drop your hips, and fire your hand upward. This re-engages your core and legs, catching the opponent completely off guard with consecutive power shots penetrating the center of their guard.