20. Miguel Cotto
The American-born Puerto Rican Junito won 41 of his 47 fights, notably losing to Canelo, Mayweather and Manny Pacquiao.
19. Juan Manuel Márquez
Winning nine world championships in an illustrious 20-year career, BoxRec ranks him as Mexico's best ever pound-for-pound fighter.
18. Wilfred Benítez
The second American-born Puerto Rican of this section, El Radar still holds the record of becoming the youngest ever boxing world champion as he dethroned then WBA light welterweight champ Antonio Cervantes aged just 17!
17. Mickey Walker
Hailing from New Jersey, Toy Bulldog won 131 times in a 163-fight career, winning the welterweight and middleweight world titles.
16. José Nápoles
Not many fighters can claim to share a record with the great Muhammad Ali, but Cuban-born Mexican boxer Mantequilla can do just that; equalling Ali's tally of the most wins in unified bouts. Wladimir Klitschko would ultimately go on to beat the record of 14 by one.
15. Shane Mosley
Yet another fighter from across the pond, Sugar won 49 of his 61 fights, also losing to Canelo, Pacquiao and Mayweather.
14. Emile Griffith
After a third encounter with Benny Paret, Griffith won back the welterweight belt. Paret, however, sadly died 10 days after the fight, never regaining consciousness after the 12th round KO.
13. Kid Gavilán
Winning 108 of his 143 professional bouts, the Cuban was named as Fighter of the Year in 1953 by the Boxing Writers Association of America.
12. Carmen Basilio
With perhaps the best nickname the sport has ever seen, The Ring Magazine's 1957 Fighter of the Year was known as The Upstate Onion Farmer.
11. Félix Trinidad
Trinidad became just the 10th Puerto Rican to be inducted into the International Boxing Hall of Fame and is commonly referred to as one of the best fighters to ever come from of the American territory.