Whether the fighter is a P4P or not, who are the fighters that could possibly beat these fighters in their respective divisions?:
Roberto Durán Samaniego (born June 16, 1951) is a Panamanian former professional boxer who competed from 1968 to 2001. He held world championships in four weight classes: Lightweight, welterweight, light middleweight and middleweight. Duran also reigned as the undisputed and lineal lightweight champion and the lineal welterweight champion. He is also the second boxer to have competed over a span of five decades, the first being Jack Johnson. Durán was known as a versatile, technical brawler and pressure fighter, which earned him the nickname "Manos de Piedra" ("Hands of Stone") for his formidable punching power and excellent defense.

Marvelous Marvin Hagler (born Marvin Nathaniel Hagler; May 23, 1954 – March 13, 2021) was an American professional boxer. He competed in boxing from 1973 to 1987 and reigned as the undisputed champion of the middleweight division from 1980 to 1987, making twelve successful title defenses, all but one by knockout. Hagler also holds the highest knockout percentage of all undisputed middleweight champions at 78 percent. His undisputed middleweight championship reign of six years and seven months is the second-longest active reign of the 20th century. He holds the record for the sixth longest reign as champion in middleweight history. Nicknamed "Marvelous" and annoyed that network announcers often did not refer to him as such, Hagler legally changed his name to "Marvelous Marvin Hagler" in 1982.

Thomas Hearns (born October 18, 1958) is an American former professional boxer who competed from 1977 to 2006. Nicknamed the "Motor City Cobra", and more famously "The Hitman", Hearns's tall, slender build and oversized arms and shoulders allowed him to move up over fifty pounds in his career and become the first boxer in history to win world titles in five weight divisions: welterweight, light middleweight, middleweight, super middleweight and light heavyweight.

Ray Charles Leonard (born May 17, 1956), best known as Sugar Ray Leonard, is an American former professional boxer, motivational speaker, and occasional actor. Often regarded as one of the greatest boxers of all time, he competed professionally between 1977 and 1997, winning world titles in five weight classes; the lineal championship in three weight classes; as well as the undisputed welterweight championship. Leonard was part of the "Four Kings", a group of boxers who all fought each other throughout the 1980s, consisting of Leonard, Roberto Durán, Thomas Hearns, and Marvin Hagler. Leonard also won a light welterweight gold medal at the 1976 Summer Olympics.
Roberto Durán Samaniego (born June 16, 1951) is a Panamanian former professional boxer who competed from 1968 to 2001. He held world championships in four weight classes: Lightweight, welterweight, light middleweight and middleweight. Duran also reigned as the undisputed and lineal lightweight champion and the lineal welterweight champion. He is also the second boxer to have competed over a span of five decades, the first being Jack Johnson. Durán was known as a versatile, technical brawler and pressure fighter, which earned him the nickname "Manos de Piedra" ("Hands of Stone") for his formidable punching power and excellent defense.
Marvelous Marvin Hagler (born Marvin Nathaniel Hagler; May 23, 1954 – March 13, 2021) was an American professional boxer. He competed in boxing from 1973 to 1987 and reigned as the undisputed champion of the middleweight division from 1980 to 1987, making twelve successful title defenses, all but one by knockout. Hagler also holds the highest knockout percentage of all undisputed middleweight champions at 78 percent. His undisputed middleweight championship reign of six years and seven months is the second-longest active reign of the 20th century. He holds the record for the sixth longest reign as champion in middleweight history. Nicknamed "Marvelous" and annoyed that network announcers often did not refer to him as such, Hagler legally changed his name to "Marvelous Marvin Hagler" in 1982.

Thomas Hearns (born October 18, 1958) is an American former professional boxer who competed from 1977 to 2006. Nicknamed the "Motor City Cobra", and more famously "The Hitman", Hearns's tall, slender build and oversized arms and shoulders allowed him to move up over fifty pounds in his career and become the first boxer in history to win world titles in five weight divisions: welterweight, light middleweight, middleweight, super middleweight and light heavyweight.

Ray Charles Leonard (born May 17, 1956), best known as Sugar Ray Leonard, is an American former professional boxer, motivational speaker, and occasional actor. Often regarded as one of the greatest boxers of all time, he competed professionally between 1977 and 1997, winning world titles in five weight classes; the lineal championship in three weight classes; as well as the undisputed welterweight championship. Leonard was part of the "Four Kings", a group of boxers who all fought each other throughout the 1980s, consisting of Leonard, Roberto Durán, Thomas Hearns, and Marvin Hagler. Leonard also won a light welterweight gold medal at the 1976 Summer Olympics.
