Lachlan Giles: The Australian Submission Grappling Champion and BJJ Instructor
Lachlan Giles is one of the most respected names in Brazilian Jiu-Jitsu today. He has built a reputation through years of hard training and smart competition. His technical style and teaching ability have made him a global figure in grappling.
Lachlan Giles became famous for defeating much larger opponents with skill. He earned the nickname “The Giant Slayer” through his incredible 2019 ADCC performance. His approach to BJJ combines science, strategy, and deep technical knowledge.
As of 2026, Lachlan Giles has officially retired from professional competition. He now focuses on coaching and education at his Melbourne academy. His legacy in the sport continues to grow even after stepping away from competition.
Who Is Lachlan Giles?
Lachlan Giles is an Australian BJJ black belt and world-class grappling coach. He trains and teaches at Absolute MMA St Kilda in Melbourne, Australia. His calm and analytical approach has earned him deep respect worldwide.
He is best known for submitting three heavyweight champions at ADCC 2019. Lachlan Giles competed at just 77kg against much bigger opponents. His heel hook skills and leg lock systems changed how people think about BJJ.
Beyond competition, Lachlan Giles is a leading BJJ educator and content creator. He runs his own instructional platform, Submeta, for serious students. His teaching style is detailed, science-based, and easy to understand.
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Lachlan Giles Biography
| Detail | Information |
| Full Name | Lachlan Sven McDonald Giles |
| Date of Birth | June 17, 1986 |
| Age (2026) | 39 Years Old |
| Birthplace | Victoria, Australia |
| Nationality | Australian |
| Nickname | The Giant Slayer / The Professor |
| BJJ Belt | Black Belt (since 2012) |
| Coach / Instructor | John Simon |
| Academy | Absolute MMA St Kilda, Melbourne |
| Education | PhD in Physiotherapy, La Trobe University (2016) |
| Wife | Livia Gluchowska |
| Retired | December 2025 |
| Platforms | Submeta, BJJ Fanatics |
Lachlan Giles Age
Lachlan Giles was born on the 17th of June in the year 1986. As of March 2026, he is currently 39 years old. He has achieved remarkable things in his sport at this age.
He announced his retirement from competition in December 2025. Lachlan Giles made this decision right after his final match. He said he was getting older but left the sport on his own terms.
| Detail | Information |
| Date of Birth | June 17, 1986 |
| Age in 2026 | 39 Years Old |
| Retirement Year | December 2025 |
Lachlan Giles Height And Weight
Lachlan Giles stands at a height of five feet and six inches. He measures approximately 168 centimeters in total height. His compact frame has always been an advantage in his grappling style.
His competition weight sits around 77 kilograms for ADCC events. His normal walking weight is closer to 82 kilograms off the mats. He competes in the middleweight category for most IBJJF tournaments.
| Detail | Information |
| Height | 5’6″ / 168 cm |
| Competition Weight | 77 kg (Welterweight – ADCC) |
| Walking Weight | ~82.3 kg / 181 lbs |
| IBJJF Category | Middleweight |
Lachlan Giles Physical Appearance
Lachlan Giles has an athletic and compact body built for grappling. He carries a lean and muscular frame that suits his weight class well. His physical build helps him move efficiently on the mats.
He is often seen with short-cropped hair and a calm expression. Lachlan Giles carries a scholarly and composed look in public. People around him describe him as quiet, focused, and highly professional.
| Feature | Description |
| Build | Athletic, compact, lean |
| Hair | Short-cropped |
| Demeanor | Calm, scholarly, composed |
| Nickname | “The Professor” |
Lachlan Giles Early Life
Lachlan Giles grew up in the state of Victoria in Australia. As a young boy, he was a big fan of Jet Li’s martial arts movies. Those films sparked his early passion for learning martial arts seriously.
He first started training in Kung Fu before discovering Brazilian Jiu-Jitsu. After seeing Royce Gracie dominate in UFC 1, everything changed for him. He quickly fell in love with the effectiveness of BJJ on the ground.
Early in his BJJ journey, Lachlan Giles suffered a serious knee injury. This forced him to take a full year away from training the sport. He used that time to focus on physiotherapy studies and technical learning.
Lachlan Giles Family
Lachlan Giles is married to Livia Gluchowska, a BJJ black belt. She is a highly accomplished competitor and coach in her own right. The couple shares both their personal life and passion for grappling together.
Livia trains and coaches alongside Lachlan at Absolute MMA St Kilda. Their shared dedication to the sport makes them a powerful duo. Lachlan Giles often credits her as one of his closest training partners.
The family is based in Melbourne, Australia, where they live and train. Lachlan Giles keeps his personal life relatively private and focused. His family life appears grounded, disciplined, and deeply connected to BJJ.
Lachlan Giles K-Guard
The K-Guard is one of Lachlan Giles’ most well-known technical innovations. He developed and popularized this outside leg-position guard system himself. It has since become a widely used tool in modern no-gi grappling.
The K-Guard is most effective against kneeling or standing opponents. It helps the bottom player get underneath an opponent’s center of gravity. From here, Lachlan Giles uses it to attack powerful leg lock entries.
This guard also creates strong back take opportunities in the gi format. The “Matrix” back take is one of its most effective follow-up moves. Lachlan Giles has taught this system to grapplers all around the world.
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Lachlan Giles BJJ
Lachlan Giles earned his Brazilian Jiu-Jitsu black belt back in the year 2012. His instructor was John Simon, who guided his early competitive development. From there, Lachlan Giles went on to compete at the highest global levels.
His BJJ style is built on technical precision and deep positional understanding. He specializes in leg locks, guard retention, and submission hunting from below. Lachlan Giles is widely regarded as one of the most technical grapplers alive.
He has also contributed major innovations to the BJJ world through teaching. His outside sankaku entries and 50/50 leg lock systems are widely studied. Lachlan Giles continues to shape how modern BJJ is taught and practiced globally.
Lachlan Giles vs. Marcelo Garcia
On December 5, 2025, Lachlan Giles faced his idol Marcelo Garcia. The match took place at ONE Fight Night 38 in Bangkok, Thailand. It was one of the most anticipated superfights in recent BJJ history.
Lachlan Giles won the match by submission in a historic finish. He used a unique twisting kneebar he personally named the “Lachy Lock.” Defeating Marcelo Garcia was an emotional and defining moment for his career.
Immediately after the match, Lachlan Giles announced his retirement from competition. He said simply that he was getting old and that this was the end. It was the perfect final chapter to a truly remarkable competitive journey.
Lachlan Giles Career
Lachlan Giles built one of the most respected careers in submission grappling. He won multiple regional and international titles throughout his competitive years. His most iconic moment remains his bronze medal run at ADCC 2019.
At that tournament, he submitted three world-class heavyweight champions with heel hooks. Lachlan Giles weighed just 77kg when he defeated those much larger athletes. That performance alone cemented his place in BJJ history forever.
Key Career Achievements:
- Bronze Medal — ADCC World Championship, Absolute Division (2019)
- 1st Place — ADCC Asia & Oceania Trials (2015, 2017, 2019)
- 1st Place — IBJJF Pan-Pacific Championship, Gi & No-Gi (2016, 2017)
- Bronze Medal — IBJJF World No-Gi Championship (2017)
- 1st Place — Kinektic Invitational 1, submitted entire opposing team (2019)
- Final Match Win — Defeated Marcelo Garcia via “Lachy Lock” (December 2025)
Lachlan Giles Guard Retention
Guard retention is one of the most studied areas of Lachlan Giles’ teaching. He created a full system called the Guard Retention Anthology for BJJ students. This system covers how to keep your guard against all types of passing styles.
Lachlan Giles breaks retention into three clear categories for easy learning. The first is against passes that go around the legs like toreando. The second covers under-the-leg attacks like stacking, and the third covers knee cuts.
His system teaches grapplers to think in layers and use proper framing. He strongly emphasizes two key rules every student must always remember. Never allow your opponent to hug your head or pin both of your legs flat.
Lachlan Giles Lifestyle
Lachlan Giles lives a disciplined and focused lifestyle both on and off the mats. He balances his role as a coach, educator, and content creator every day. His daily routine revolves around training, teaching, and developing BJJ instructionals.
He holds a PhD in Physiotherapy, which shapes how he approaches fitness and recovery. Lachlan Giles applies biomechanical science to his training methods and student coaching. His academic mindset makes him stand out from most athletes in the sport.
Based in Melbourne, he lives with his wife Livia Gluchowska and stays close to his gym. Lachlan Giles avoids unnecessary media attention and focuses on meaningful work. He is known for his humble, professional, and deeply intellectual way of living.
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Lachlan Giles Net Worth
Lachlan Giles has built a strong financial profile within the BJJ industry. His income comes from his academy, seminars, and top-selling instructional products. He is one of the best-selling authors on the BJJ Fanatics platform globally.
His own platform, Submeta, adds another major income stream to his career. While his exact net worth is private, it is believed to be quite significant. Lachlan Giles has turned his technical expertise into a highly successful business.
| Income Source | Details |
| Academy | Absolute MMA St Kilda, Melbourne |
| Instructionals | BJJ Fanatics – Top-Selling Author |
| Own Platform | Submeta |
| Seminars | International seminar tours |
| Coaching | Elite athlete development |
| Estimated Net Worth | Significant (exact figure private) |
Last Words
Lachlan Giles is truly one of the greatest technical minds in BJJ history. He retired in 2025 after defeating his idol Marcelo Garcia in a final superfight. His career was defined by intelligence, innovation, and heart on the competition mats.
Even in retirement, Lachlan Giles continues to shape the future of grappling worldwide. Through coaching, education, and platforms like Submeta, his influence keeps growing. He leaves behind a legacy that will inspire BJJ practitioners for many generations ahead.
Frequently Asked Questions
Who is Lachlan Giles?
Lachlan Giles is an Australian BJJ black belt, coach, and innovator known as “The Giant Slayer” for his legendary 2019 ADCC performance.
How old is Lachlan Giles?
He was born on June 17, 1986, making him 39 years old as of 2026.
What is Lachlan Giles’ nickname?
He is known as both “The Giant Slayer” and “The Professor” in the BJJ community.
Is Lachlan Giles retired?
Yes, he officially retired from professional competition in December 2025 after defeating Marcelo Garcia.
What is the Lachy Lock?
The Lachy Lock is a twisting kneebar variation Lachlan Giles used to submit Marcelo Garcia in his final match.
What is the K-Guard in BJJ?
The K-Guard is an outside leg-position guard system innovated and popularized by Lachlan Giles for leg lock attacks and back takes.
Where does Lachlan Giles coach?
He is the head coach at Absolute MMA St Kilda in Melbourne, Australia.
Who did Lachlan Giles train?
His most notable student is Craig Jones, who became an ADCC standout and founder of the Craig Jones Invitational.
What is Lachlan Giles’ educational background?
He holds a PhD in Physiotherapy from La Trobe University, specializing in patellofemoral knee pain.
Where can I find Lachlan Giles’ BJJ instructionals?
His instructionals are available on BJJ Fanatics and his own platform, Submeta.
