José Nápoles had a total of seven losses in his professional boxing career — three of them in title bouts and four in non-title bouts. He suffered his first loss against Hilton Smith via 8 round unanimous decision on August 22, 1959. He was stopped four times and lost three times via decision.
John H Stracey, Carlos Monzon, Billy Backus, LC Morgan, and Alfredo Urbina are some of the boxers who have beaten Nápoles.
This is the first loss in José Nápoles' career. Nápoles lost to Hilton Smith via 8 round unanimous decision on in a non-title bout. He was 19 years old with a record of 7-0.
On Nápoles lost to Tony Perez in the rematch via 10 round split-decision in a non-title bout. He was 22 years old with a record of 24-1.
On Nápoles lost to Alfredo Urbina via 10 round PTS in a non-title bout. He was 23 years old with a record of 26-2.
On Nápoles lost to LC Morgan in a rematch via 4th round TKO in a non-title bout. He was 26 years old with a record of 45-3.
On Nápoles lost to Billy Backus via 4th round TKO. He was defending his welterweight WBA, WBC, and The Ring titles, he was 30 years old with a record of 65-4.
On Nápoles lost to Argentinian boxer Carlos Monzon via 6th round RTD. He was fighting for Monzon's middleweight WBA, WBC, and The Ring titles, he was 33 years old with a record of 77-5. Monzón was 31 years old with a record of 81-3-9.
On Nápoles lost to John H Stracey via 6th round TKO. He was defending his welterweight WBC and The Ring titles, he was 36 years old with a record of 81-6.