The roundhouse kick (dollyo chagi) is the workhorse of modern sparring. Watch a Grand Prix match and most exchanges are fast roundhouses to the body protector, thrown off the front leg, the back leg, or both in a row. If I could only drill one kick for a year, it would be this one.
(y-) Mental Model
Picture the leg as a door on a hinge. The knee comes up and points at the target first, then the hip turns over and the lower leg swings out from the knee and snaps back. The power comes from the hip rotating, so a roundhouse thrown from a hip that stays square is just a leg swing.
The sparring version is lighter and faster than the poomsae version. In poomsae you show a full chamber and a crisp extension. In sparring the chamber gets shorter and the kick comes in at roughly 45 degrees (this flatter, quicker version is often called bandal chagi) because all it has to do is trip the sensor on the hogu before the other person moves.
(y-) The Step-by-Step
Assume a closed sparring stance, left foot forward, kicking with the rear (right) leg.
- Lift the knee. Bring the right knee up and forward until it points at the target. The foot stays tucked toward your backside.
- Pivot the support foot. Turn on the ball of the left foot so the heel rotates toward the target. For a body kick, about 90 degrees is enough. For a head kick you will need closer to 180.
- Turn the hip over. Roll the right hip forward and up until it stacks over the left.
- Snap from the knee. Extend the lower leg and hit with the instep (the top of the foot, toes pointed). Lean the upper body back just enough to counterbalance, guard still up.
- Retract along the same path. Snap the foot back to the chamber before it drops. A roundhouse that falls straight down after impact leaves you square and close.
- Land in stance. Put the foot down where you want to be next, either back where it started or forward into a new lead.
The front-leg roundhouse uses the same steps with a small skip or slide first, so the rear foot catches up and the lead knee can come up without you leaning.
(y-) Key Details
- Hit with the instep. The sensors are in the socks, so a kick that lands with the shin often does not register, and kicking with the toes is how people break them.
- Point the knee before the foot moves. If the foot starts swinging before the knee is aimed, the kick arcs wide and the opponent sees it from the moment you shift your weight.
- The support heel decides your height. A body kick needs a partial pivot. A head kick needs the full turn, and without it your hip cannot get high enough.
- Keep the hands working. Drop the arm on the kicking side to balance and the head is open the whole time your leg is in the air.
(y-) Sparring Variations
| Variation | When it fits |
|---|---|
| Front-leg roundhouse | The default scoring kick at mid range. Short travel, hard to read, safe to throw often. |
| Back-leg roundhouse | More power and reach. Good as a counter after they kick, worse as an opener because the hip turn announces it. |
| Double roundhouse (dubal dangseong) | Two kicks, alternating legs, with a small jump between them. The first one moves the guard, the second scores. |
| Cut kick into roundhouse | Lift the front leg to jam their kick, then turn the same leg over into a roundhouse without putting it down. |
| Roundhouse to the head | Three points instead of two. Throw it after a body kick has pulled their elbows low. |
Open stance (opposite leads, one fighter left foot forward and one right) and closed stance (same lead) change which side of the hogu faces you. Before throwing the back-leg kick, check which side of the chest protector is open. The (y-) sparring page has more on the front-leg game.
(y-) Progression Drills
| Stage | Drill |
|---|---|
| 1 | Chair chamber. Hold a chair or wall for balance. Lift the knee, pivot, turn the hip, extend, retract. Ten slow reps each side. |
| 2 | Chamber hold. Same drill without support. Hold the chambered knee for three seconds before each extension to build hip strength. |
| 3 | Pad snaps. Partner holds a target at belt height. Fire fast, light kicks and retract each one fully before the next. |
| 4 | Front-leg skip. From stance, skip and kick with the lead leg in one motion. Work on hiding the skip so the shoulders do not bob first. |
| 5 | Doubles on two pads. Partner holds two targets. Alternate legs with no pause on the ground between kicks. |
| 6 | Reaction kicks. Partner flashes a pad at random heights and angles. Kick only when it appears. |
(y-) Common Mistakes
| Mistake | Fix |
|---|---|
| Support foot stays planted | Turn the heel toward the target. The hip cannot rotate past the support foot. |
| Swinging the leg straight | Chamber first. The knee aims, the lower leg snaps. |
| Hitting with the toes | Point the toes and strike with the top of the foot. |
| Leg drops after impact | Retract to the chamber, then land. Practice by touching the pad and pulling back. |
| Leaning forward into the kick | Lean the upper body back slightly to counter the leg, eyes still on the target. |
| Guard drops on the kicking side | Keep both hands up during pad work until it stops being something you think about. |
The hip turnover in the roundhouse is also the base for the (y-) spinning kicks, and the 360 roundhouse is the same kick with a full turn in front of it.
Sources
(y-) Axe Kick | (y-) Footwork | (y-) Combinations
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