Reviewed by the BJJ Sportswear Editorial Team for technical accuracy and kept current.
Half guard went from a place nobody wanted to be to a full attacking system. This guide covers the underhook battle, the main variations, the key sweeps, and how the top player beats it.

For decades, half guard was a stop on the way to getting passed. Your closed guard broke, they got one leg through, and you scrambled to recover. Then Roberto “Gordo” Correa hurt his knee in the early 1990s, and because he could not play closed guard he stayed in half guard and started attacking from it, eventually winning world titles that way.
Today, Bernardo Faria has won five world championships from half guard, Lucas Leite built a career on it, and Tom DeBlass has kept his guard unpassed for years with it. John Danaher puts it simply: the older you get, the more you need it, because it runs on position rather than speed.
You are on the bottom, and one of their legs is trapped between both of yours. Closed guard controls both hips while half guard controls one leg, which makes the position lopsided: they can move one hip freely, but the trapped leg anchors them.
That trapped leg is a lever, and if you control it and get on your side you can sweep, take the back, or submit. It is a guard and a passing position at the same time, which is why both players always have work to do.
Everything in half guard starts here, with the underhook: your arm under their arm and into their armpit.
Every half guard drill starts the same way, by getting to your side and winning the underhook before you attempt any sweep.
A flat bottom player has almost nothing, whereas staying on your side gives you a posted elbow to frame, a shoulder angle that resists pressure, mobile hips, and space to thread the underhook. If you get flattened, forget everything else and shrimp, bridge, and get back on your side.
Gordo’s original sweep. Learn it first.
Your top knee goes across their chest or hip like a shield, keeping their weight off you and stopping the crossface. From here you can push them away to recover full guard, pull them in for the underhook, or attack sweeps and kimuras, which is why it is the most common half guard in the gi today. Our Z-guard guide breaks down the full shield mechanics and attacks in more depth.
You slide all the way under their hips, so their trapped leg is over your shoulder and your head is under their body. Jeff Glover made it famous, and it is great for sweeping big opponents because you are already under their centre of gravity, though the main risks are getting flattened and giving up the back if you stall. See our deep half guard guide for the full entry and the waiter sweep step by step.
This is Eddie Bravo’s 10th Planet system, where you figure-four your legs around their trapped leg and stretch it out. It stops them passing and sets up the electric chair sweep and the whip up, and it works best in no-gi, where it is a big part of many MMA grapplers’ games.
Your inside foot becomes a butterfly hook under their thigh. It adds lift to every sweep and connects half guard to the butterfly sweep. Tom DeBlass built his retention game around it.
When you come up on your knees with the underhook and they still have a whizzer, you are in the dogfight. From here you can run the pipe forward for a sweep, drop for a low single, or roll under to a back take. Winning dogfights is a skill on its own and worth drilling.
Once you have the underhook and are on your side, drop your head to the mat, drive under their armpit, and come up behind them. Add your near hook and pull them down. Our back control guide covers what to do next.
Kimuras from Z-guard, kneebars off a forward roll, loop chokes when they lean in, and guillotines when they drive their head down. Sweeps and back takes are still higher percentage, but these keep them honest.
The top player has one job first: kill the underhook, get the crossface, and flatten them. From there the main passes are the knee slice, the over-under pass, and the leg drag, and the key is to never let them get their knee shield in place by staying heavy on their chest and freeing your knee before they can build a frame.
In the gi you have lapel and belt grips, and the knee shield game is stronger. In no-gi, the underhook battle is everything and the lockdown and dogfight show up far more often. Both versions come back to the same rule: win the underhook, stay on your side.
White and blue belts should own the old school sweep and the back take. Purple belts add Z-guard and deep half. Brown and black belts connect it to leg locks and top-side passing. Position sparring that starts in half guard is the fastest way to build it.
A bottom position where you trap one of your opponent’s legs between both of yours. It controls one leg instead of both hips, and it is used to sweep, take the back, or submit once you win the underhook and get to your side.
The underhook. Whoever wins the underhook controls the position. With it, the bottom player can angle and attack. Without it, they get flattened and passed. Staying on your side is the second rule.
Yes. It needs position and timing rather than speed or flexibility. Beginners should learn the old school sweep and the back take first, then add Z-guard as they progress.
Kill the underhook, get the crossface, and flatten them. Then free your knee with a knee slice, underhook pass, or leg drag before they can build a knee shield.
Founder & Editor, BJJ Sportswear
Mohsin has trained Brazilian Jiu-Jitsu for six years at Gracie Barra and has competed at IBJJF-affiliated tournaments. He writes about competition, gear, and athlete careers, and founded BJJ Sportswear to help grapplers find equipment and information they can trust.
This article was last reviewed and updated on 2026-08-16.