Best Boxers of All Time Pound for Pound: Top 15 Ranked

The Old Mongoose went 186-23-10 with 131 knockouts, the most in boxing history, and he had to wait 17 years as a pro before anyone gave him a title shot. He finally beat Joey Maxim by 15-round decision on Dec. 17, 1952 in St. Louis, at 38 years old, and held the light heavyweight title until 1962.

The signature night was Dec. 10, 1958 at the Montreal Forum: down four times against Yvon Durelle, Moore got up and knocked him out in the 11th. Three losses to Ezzard Charles keep him from climbing higher.

Leonard owned the lightweight division for almost eight years, from stopping Freddie Welsh in nine rounds on May 28, 1917 in New York until he retired as champion on Jan. 15, 1925. His official record reads 89-6-1 with 70 knockouts, but he fought 219 times once newspaper decisions are counted.

He beat Lew Tendler by 15-round decision at Yankee Stadium on July 24, 1923 to settle their rivalry.

The only eight-division world champion in history, from flyweight in 1998 to super welterweight in 2010. Pacquiao stopped Marco Antonio Barrera in 11 rounds on Nov. 15, 2003 in San Antonio, retired Oscar De La Hoya on his stool after eight rounds on Dec. 6, 2008, flattened Ricky Hatton in two on May 2, 2009 and stopped Miguel Cotto in the 12th on Nov. 14, 2009, all at the MGM Grand.

He is 62-8-3 with 39 knockouts after a majority draw with Mario Barrios on July 19, 2025, at 46 years old. The 2015 loss to Floyd Mayweather is why Floyd sits above him.

Chavez started 87-0 and did not lose until Frankie Randall in January 1994, finishing 107-6-2 with 86 knockouts and titles in three divisions. He destroyed Edwin Rosario in 11 rounds on Nov. 21, 1987 at the Las Vegas Hilton, and he stopped Meldrick Taylor with two seconds left on March 17, 1990 in the same building.

On Feb. 20, 1993 he beat Greg Haugen in five rounds in front of 132,274 people at Estadio Azteca, still the biggest crowd in boxing history.

The Cincinnati Cobra may be the best light heavyweight ever, and he never got a title shot at 175. He beat Archie Moore three times, the last by eighth-round knockout on Jan. 13, 1948 in Cleveland, then moved up and outpointed Jersey Joe Walcott for the NBA heavyweight title on June 22, 1949 at Comiskey Park.

On Sept. 27, 1950 he beat an aging Joe Louis over 15 rounds at Yankee Stadium to become undisputed champion. He finished 95-25-1 with 52 knockouts, most of the losses coming against heavyweights after his prime.

Sweet Pea is the greatest defensive fighter on this list and the only one whose signature win is officially a draw. On Sept. 10, 1993 at the Alamodome he outboxed an unbeaten Julio Cesar Chavez for 12 rounds and got scores of 115-113 Whitaker, 115-115 and 115-115.

The 1984 Olympic gold medalist went 40-4-1 with 17 knockouts and won titles in four divisions, starting with a decision over Jose Luis Ramirez in Norfolk on Aug. 20, 1989 for the WBC lightweight belt. He was the first undisputed lightweight champion of the modern era.

Fifty wins, no losses, 27 knockouts, 15 major belts across five divisions from 130 to 154. Mayweather beat Oscar De La Hoya by split decision on May 5, 2007, took a majority decision from Canelo Alvarez on Sept. 14, 2013 and outpointed Manny Pacquiao 118-110, 116-112, 116-112 on May 2, 2015 at the MGM Grand.

Why ninth and not higher? Timing. The Pacquiao fight came five years late, and the back end of the run was built on safety-first decisions.

Leonard fought 40 times, went 36-3-1 with 25 knockouts, and his wins read like a Hall of Fame roll call: Wilfred Benitez, Roberto Duran, Thomas Hearns, Marvin Hagler. He stopped Duran in eight in the No Mas fight on Nov. 25, 1980 in New Orleans, then came from behind to stop Hearns at 1:45 of the 14th on Sept. 16, 1981 at Caesars Palace.

He returned from a three-year layoff to take a split decision from Hagler on April 6, 1987, and finished with titles in five divisions. Shortest career here, best opponents.

The Pittsburgh Windmill fought roughly 299 times in 13 years, 261-18-19 once newspaper decisions are included. He is the only man who ever beat Gene Tunney, by 15-round decision for the American light heavyweight title at Madison Square Garden on May 23, 1922.

Greb beat Johnny Wilson at the Polo Grounds on Aug. 31, 1923 for the world middleweight title and held it until 1926. No film of a Greb fight survives, which is the only reason he is not top five.

Duran was 72-1 when he walked into Olympic Stadium in Montreal on June 20, 1980 and beat Sugar Ray Leonard over 15 rounds for the WBC welterweight title. Before that he had spent seven years as the most frightening lightweight alive, starting with a 13th-round stoppage of Ken Buchanan at Madison Square Garden on June 26, 1972.

He won titles in four divisions across three decades, the last a split decision over Iran Barkley in Atlantic City on Feb. 24, 1989 at age 37. Final record: 103-16 with 70 knockouts. No Mas costs him a spot, not his standing.

The Brown Bomber knocked out James J. Braddock in eight rounds at Comiskey Park on June 22, 1937, then held the heavyweight title for 11 years and eight months with 25 successful defenses. Nobody at heavyweight has come close to either number.

One year to the day after Braddock, Louis knocked out Max Schmeling in 2:04 at Yankee Stadium in front of 70,043 people. He finished 66-3 with 52 knockouts, and two of the losses came after he un-retired broke.

Pep started his career 62-0, won the world featherweight title at 20 by outpointing Chalky Wright at Madison Square Garden on Nov. 20, 1942, and went 229-11-1 with 65 knockouts across 241 fights. After his first loss, to Sammy Angott in 1943, he ran off another 73 fights without defeat.

The masterpiece came on Feb. 11, 1949 at the Garden, when he took his title back from Sandy Saddler over 15 rounds, moving and jabbing a man who had stopped him months earlier. Greatest pure boxer at any weight.

Between Oct. 29, 1937 and Aug. 17, 1938, Armstrong knocked out Petey Sarron for the featherweight title, outpointed Barney Ross for the welterweight title and took a split decision from Lou Ambers for the lightweight title. For about four weeks he held all three at once, something nobody had done and nobody will do again with 17 divisions.

Hammerin' Hank went 151-22-10 with 100 knockouts and made 19 welterweight defenses, still the division record. He did it in an eight-division era against the full field.

Ali won the title from Sonny Liston at 22 in Miami Beach on Feb. 25, 1964, lost three and a half prime years to his draft refusal, then came back and beat the two best heavyweights of the next generation. He knocked out George Foreman in eight rounds in Kinshasa on Oct. 30, 1974 as a 4-1 underdog, and stopped Joe Frazier after 14 rounds in Manila on Oct. 1, 1975.

The first man to win the lineal heavyweight title three times finished 56-5 with 37 knockouts. In a pound for pound discussion the heavyweight knock is that he never had to move up or down. He gets a pass because he beat them with speed, not size.

The phrase pound for pound was invented to describe him. Robinson went 174-19-6 with 109 knockouts across 201 fights, ran unbeaten for 91 straight fights between 1943 and 1951, won the welterweight title over Tommy Bell in Cleveland on Dec. 20, 1946 and won the middleweight title five separate times.

The night that defines him was Feb. 14, 1951 at Chicago Stadium, when he broke down Jake LaMotta until the referee stopped it in the 13th. He had already beaten LaMotta four times. He could box, punch with either hand, take a shot and finish, for 25 years. Everybody else is chasing him.