YR Sports Lab
You have driven your opponent onto their hands and knees and grabbed their lapel, but you are not sure where your head goes or which way your feet should walk. The core of the clock choke is to put your weight on the back of the neck and then walk around the head like the hand of a clock, tightening the lapel as you go. This guide covers the story of a famous 1998 match, the grip and walk, setups, strengths and limits, three escape ideas, and rules and safety.
1. Origin and Story: A Match Where the Tap Never Came
We could not find a reliable record of who invented the clock choke. Evolve MMA says it came from judo, but we found no second independent source, so treat that as a single-source claim. What made it famous is the match between Wallid Ismail and Royce Gracie in 1998.
According to Wikipedia's Wallid Ismail and Royce Gracie entries, the match took place on December 17, 1998, listed as Oscar de Jiu-Jitsu, under rules with no points and no time limit, so only a submission could decide it. Ismail choked Royce unconscious with a clock choke at 4:53. Grapplearts' Stephan Kesting records that Royce refused to tap and lost consciousness, and notes that the match was the first time many North Americans heard of Carlson Gracie and his team.
Background to the match
Per Wikipedia, Royce Gracie won the single-elimination tournaments at UFC 1, UFC 2 and UFC 4, making him the first and only three-time UFC tournament winner (per Wikipedia, checked 2026/10). Wallid Ismail is a Brazilian born in Manaus in 1968 who moved to Rio in 1984 and trained under Carlson Gracie until Carlson died in 2006 (Wikipedia).
Wikipedia says the match drew international attention because of Royce's UFC background. Its text and infobox disagree on Ismail's belt rank, so this article does not state one.
Note that this was a special-rules match, so the result cannot be used to judge whose overall jiu-jitsu was better. We cite it because it is the most commonly mentioned setting for this choke, and because it shows one point: once a choke is on the neck, the cost of not tapping is losing consciousness.
2. Mechanics: Weight, Lapel, Head on the Mat
The clock choke is usually a one-handed lapel choke used when the opponent is on hands and knees and you are above and beside them. The steps below are collected from Grapplearts and Evolve MMA instruction. They are instructional, not match statistics:
| Stage | Key points |
|---|---|
| 1. Rear knee in | Drive your rear knee into the gap between the opponent's elbow and knee so they cannot recover guard and their arm structure is disrupted; stay heavy in a real match (Grapplearts) |
| 2. Feed the lapel | Run your bottom arm under their armpit and pull the far lapel toward their hips to remove slack; cut your top hand across the throat and grip the far lapel with the thumb inside (Grapplearts) |
| 3. Control the far wrist | Move the bottom hand to the far wrist with all five fingers over the top and pull it under their body, flaring the elbow and removing a base (Grapplearts) |
| 4. Sprawl, head down | Sprawl your legs back and rest the edge of your ribs on the back of the neck, with the top of your head on the mat for base; if your head cannot reach the mat, you are probably on their back rather than their neck (Grapplearts) |
| 5. Walk the clock | If they do not tap, walk your legs around their head like clock hands to increase pressure and watch for the tap (Grapplearts, Evolve MMA) |
Evolve MMA stresses that the choking line should cross the neck, not necessarily go deep, while Grapplearts warns that feeding the bottom arm too deep lets the opponent trap your elbow and roll you. For neighboring collar chokes, see the site's Cross Collar Choke guide and Baseball Choke guide.
3. Setups and Timing
The timings below come from Grapplearts and Evolve MMA instruction:
First, the opponent turns to their knees to escape side control. Both Evolve MMA and Grapplearts note that opponents often come to their knees while escaping side control, exposing the back. This is the classic entry. For side control and its escapes, see the site's side control escapes guide.
Second, the opponent turns to their knees to avoid a guard pass. Grapplearts points out that with guard pass points in competition, opponents are more willing to roll to their knees, which makes turtle a common competition situation.
Third, scrambles after a failed takedown. Evolve MMA lists an opponent landing with their back to you after a failed takedown as another time to enter this position.
Evolve MMA also describes a variation entered from side control, pinning both hands with kesa gatame before grabbing the lapel and walking, with Ricardo Cavalcanti demonstrating; this is a single-source claim, for reference only. For the turtle position itself see the site's turtle defense guide, and for the trade-off with taking the back see the Rear Naked Choke guide.
4. Strengths and Limits
| Strengths | Limits |
|---|---|
| One-handed lapel choke, leaving the other hand to control the far arm (Evolve MMA) | Requires a gi; without a lapel it cannot be applied the same way |
| Per instructional accounts, no need to take the back first; it can be attacked when the opponent turns to their knees | If the bottom arm feeds too deep, the elbow can be trapped and rolled (Grapplearts) |
| Walking the clock adds pressure without relying on arm strength (Evolve MMA says it can put people to sleep with little effort) | Slack in the lapel makes the finish take more effort (Grapplearts); if your head is off the mat you are on their back, not their neck |
5. Common Escapes and Counters
The main window is before the lapel is on the neck, while you are still in turtle:
First, do not stay in turtle. Grapplearts' turtle escape article states bluntly that turtle is a terrible position and that you should not linger there but start escaping at once; the escapes it describes are the sit down escape, the Half Granby and the stand up escape. For the full turtle defense, see the site's turtle defense guide.
Second, use wrist control to limit space. The same article describes a "cheat code" setup: control the top arm at the wrist with a baseball bat grip, put the top of your head in the opponent's armpit, and keep tension in their arm. The author stresses that this is only a setup for an immediate escape, not a place to stay.
Third, punish a mistake in the lapel feed. If the attacker's bottom arm goes too deep, Grapplearts says you can trap the elbow and roll them. This is a risk point described by an instructional site, and the window in real rolling is short.
Options after you leave turtle
If you sit down or turn back into guard, you recover a guard position, the opponent has to deal with the pass again, and the lapel attack is neutralized for now.
If the lapel is already on your neck, do not tough it out. The only reliable option is an early tap, because a choke can cause loss of consciousness very quickly.
6. Frequency in Competition and Rules
We could not find reliable per-technique statistics: on the official IBJJF results pages we found only placings and brackets, not submission rates by technique. The IBJJF 2023 Worlds breakdown lists only a few broad categories (for example 21 chokes from the back from the quarterfinals through the finals, 44.68% of submissions at that stage) and does not mention the clock choke (IBJJF website, checked 2026/10). So this article gives no percentage and can only say qualitatively that the clock choke is a turtle collar choke that is widely taught and often mentioned in gi competition, and the best-known example is the 1998 match above.
On rules, this is a gi collar choke. We could not obtain the official IBJJF text to confirm item by item whether it is legal at each belt level. Rules change every year, so check the latest version and the organizer's notes before competing (checked 2026/10).
7. Safety
A choke acts on blood flow and the airway in the neck, and with enough pressure consciousness can disappear within seconds. The 1998 match illustrates the cost of refusing to tap. For the physiology of chokes and safe tapping, see the site's choke safety guide. This article cites no new medical statistics, and all advice is gym-level practice.
・Walk and add pressure slowly and evenly, never yank, and release at once when your partner taps
・When caught, do not hold out of pride; toughing it out once the choke is on the neck risks unconsciousness
・Stop at the first tap on the mat or your body, with no "one more squeeze"
・Beginners should first drill turtle escapes, with an experienced coach supervising the attacking side
FAQ
What is the clock choke and why is it called that?
The clock choke is a one-handed lapel choke from the opponent's turtle position in the gi. You finish it by walking around their head like the hand of a clock to add pressure. The name comes from that walk; reliable sources do not record who first invented the choke.
When should I use the clock choke?
Use it when the opponent is on their hands and knees and you are above and beside them. Common sources are opponents who turn to their knees to escape side control or to avoid a guard pass, and scrambles after failed takedowns. These are instructional accounts, not match statistics.
How do I escape a clock choke?
Leave turtle before the lapel crosses your throat, using a sit down escape, Half Granby or stand up escape to recover guard. If the attacker feeds the lapel too deep, their elbow can be trapped and rolled. Once the choke is on your neck, an early tap is the only reliable option.
Do I need a gi for the clock choke?
Yes. It uses the opponent's lapel to form the choking line, so in no-gi there is no lapel to grip and you cannot apply it the same way. For no-gi turtle attacks, study back takes and chokes that do not rely on clothing.
What happened in the Royce Gracie match?
In 1998 Wallid Ismail choked out Royce Gracie with a clock choke in under five minutes, in a match with no points and no time limit. Grapplearts describes Royce refusing to tap and losing consciousness. The origin section cites the sources.
References
1. Wikipedia contributors. Wallid Ismail. en.wikipedia.org/Wallid_Ismail(checked 2026/10; Supports the December 17, 1998 match, no points and no time limit, the 4:53 clock choke on Royce, and Ismail's birth in Manaus in 1968 and training under Carlson Gracie)
2. Wikipedia contributors. Royce Gracie. en.wikipedia.org/Royce_Gracie(checked 2026/10; Supports the match date and rules, and the UFC 1, 2 and 4 titles)
3. Grapplearts (Stephan Kesting). Clock Choke. grapplearts.com(checked 2026/10; Supports Royce refusing to tap and losing consciousness in 1998, the timing, the four-step grip and the risk of the elbow being trapped)
4. Grapplearts (Stephan Kesting). The Clock Choke Heard Round the World. grapplearts.com(checked 2026/10; Supports the match result and that it introduced many North Americans to the Carlson Gracie team)
5. Evolve MMA. How To Perform The Clock Choke In BJJ. evolve-mma.com(checked 2026/10; Supports the name, the one-handed lapel choke, the choking line across the neck, the side control variation (demonstrated by Ricardo Cavalcanti) and the single-source judo origin claim)
6. Grapplearts (Stephan Kesting). The Cheat Code for BJJ Turtle Escapes. grapplearts.com(checked 2026/10; Supports the three turtle escape options and the wrist control grip)
7. IBJJF. 2023 World Championships Submission Breakdown. ibjjf.com(checked 2026/10; Supports that the official breakdown lists only a few broad categories such as chokes from the back, armbars and triangles, and does not mention the clock choke)