Strength. Service. Skill.
This is what it means to be S3.
Samuel Arnold III didn't wait for an invitation to the top. Born in St. Louis, Missouri and raised in Dallas, Texas, Arnold laced up his gloves at age 5 and began competing in the amateurs with a singular obsession: to be the best. By the time he turned professional at just 17 years old, he had already become a seven-time national amateur champion — the number one ranked amateur in the country at his weight class.
But the strength that defines S3 goes deeper than the record. He lost his best friend the week before his second professional fight — on his 18th birthday. He lost his coach the week after. He spent the majority of his early career as a free agent, fighting through uncertainty, grief, and the kind of pressure most people never face. He walked into that ring anyway. Every single time.
Strength — The Making of S3
On March 12, 2021, Samuel Arnold III made his professional debut. He has not lost since. Competing under the DMG Boxing promotional banner, Arnold has built a spotless 16-0 record with 11 knockouts — a 69% finish rate that reflects the kind of power rarely paired with this level of technical mastery. He turned pro as a teenager and by 23 is already ranked among the elite light heavyweights on the planet.
Standing 6 feet 3 inches tall with the reach and ring generalship to match, Arnold is what scouts call a "complete fighter" — a technical boxer with genuine knockout power in both hands. Seven national titles didn't happen by accident. Neither did sixteen professional wins. Skill is the result of ten thousand hours that nobody saw — and S3 has put in every single one.
Skill — Flawless Since Day One.
Crowned. Ranked. Ready.
Arnold's relentless ascent through the WBA rankings culminated in the capture of the WBA NABA Light Heavyweight Title — a recognized WBA regional championship that serves as a direct pipeline to mandatory world title contention. He has since defended that title with authority, including a stunning first-round stoppage of Argentine veteran Fernando "Manzana" Farías via liver shot knockout in Long Beach, California.
As of 2026, Samuel Arnold III is officially ranked #7 in the world at light heavyweight by the World Boxing Association. At 23 years old, with zero professional losses and a title already on his mantle, the next step is undeniable.
A champion's responsibility doesn't end at the final bell. Samuel Arnold III is committed to his community — Dallas, and every young kid who sees themselves in his story. The ring is the platform. The mission is bigger than boxing.
More on S3's community initiatives coming soon.
Service — Beyond the Ring
mission
To compete at the highest level of professional boxing while using the platform of sport to inspire the next generation — in the gym, in the community, and in life.
Strength. Service. Skill.
Strength. Service. Skill.
Connect With S3
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