On This Day In Boxing History

1956: Rocky Marciano Announces His Retirement!

Rocky Marciano, born Rocco Francis Marchegiano on September 1, 1923, in Brockton, remains one of boxing’s most iconic figures. He is the only heavyweight champion in history to retire undefeated, compiling a perfect professional record of 49–0 with 43 knockouts.

Marciano grew up in a working-class Italian-American family and left school early to take on labor-intensive jobs. His path to boxing began during his service in the U.S. Army during World War II, where he developed his skills and won amateur competitions. He turned professional in 1947, bringing with him a raw but relentless style built on endurance, strength, and punching power.

Despite standing just 5 feet 10 inches tall with a relatively short 68-inch reach—well below typical heavyweight standards—Marciano quickly rose through the ranks. His aggressive, pressure-heavy approach and devastating right hand, famously dubbed the “Suzie Q,” made him one of the most feared punchers of his era. A pivotal moment came in 1951 when he knocked out former champion Joe Louis, elevating him to top contender status.

Marciano captured the world heavyweight title on September 23, 1952, knocking out Jersey Joe Walcott in the 13th round with one of the most dramatic single punches in boxing history. He went on to defend the title six times against elite challengers, including Ezzard Charles, Roland La Starza, Don Cockell, and Archie Moore. His final bout came in 1955, when he stopped Moore by knockout.

Marciano retired in 1956 at the age of 32 as the reigning, undefeated heavyweight champion.

His six successful title defenses and extraordinary knockout ratio underscore a career defined by durability, conditioning, and relentless forward pressure. While not considered a technically polished boxer by traditional standards, his toughness, stamina, and will to win made him exceptionally effective and ultimately unbeatable in the ring.

Outside the ropes, Marciano remained a public figure after retirement. His life was cut short on August 31, 1969, when he died in a plane crash near Newton, just one day before his 46th birthday.

Marciano’s legacy endures as a symbol of perseverance and dominance. His perfect record and reign as champion continue to stand as a unique achievement in heavyweight boxing history.

Rocky Marciano

Born: September 1st, 1923

Birth Name: Rocco Francis Marchegiano

Birth Place: Brockton, Massachusetts

Residence: Brockton, Massachusetts

Amateur Record: 15-4, 11Ko’s  

Pro Debut: March 17th, 1947

Division: Heavyweight

Stance: orthodox

Height: 5′ 10½″  

Reach: 68″  

Bouts: 49

Rounds: 242

Record: 49-0, 43Ko’s

Kos: 88%

Referee: 1951- 1969 – 45 bouts

Died: Age 45, August 31st, 1969

World Heavyweight Champion / NBA - NYSAC World Heavyweight Champion - 1952 Sep 23 – 1956 Apr 27

April 27th

1910: Sam Langford ND6 Stanley Ketchel

1942: Bob Foster is born in Albuquerque, New Mexico

Holman Williams W12 Kid Tunero

1944: Holman Williams W15 Jack Chase

1948: Manuel Ortiz RTD6 Joey Dolan

1956: Rocky Marciano announces his retirement age 32

1967: Jerry Quarry KO3 Alex Miteff

1968: Jimmy Ellis W15 Jerry Quarry

1974: Chartchai Chionoi WSD15 Fritz Chervet

1978: Roberto Durán W10 Adolfo Viruet

1980: Alexis Arguello KO5 Rolando Navarette

Wilfredo Gómez TKO4 Eddie Ndukwu

1985: Jung Koo Chang WMD12 German

1987: Tomohiro Kiyuna W10 Seiji Tomari

Johnny Du Plooy KO9 David Bey

1989: Simon Brown KO7 Al Long

1990: Orlando Canizales TKO6 Jesus Portillo

James Toney TKO5 Jose Luis Esteven

1993: Michael Moorer TKO3 Frankie Swindell

1996: Harold Grey W12 Carlos Salazar

Hiroshi Kawashima W12 Cecilio

1997: Fabrice Tiozzo TKO3 Ed Dalton

2002: Johnny Tapia W12 Manuel Medina

2007: Melissa Hernandez MD8 Layla McCarter

2012: Frida Wallberg W10 Amanda Serrano

2013: Danny Garcia W12 Zab Judah

Peter Quillin TKO7 Fernando Guerrero

Sergio Martinez W12 Martin Murray

Dahiana Santana W10 Claudia Andrea Lopez

Su Yun Hong TKO5 Thanya Tuyon

2016: Jezreel Corrales KO2 Takashi Uchiyama

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Ryoichi Taguchi RTD11 Juan Jose Landaeta

2019: Nonito Donaire KO6 Stephon Young

2024: Vergil Ortiz Jr. KO1 Thomas Dulorme

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