From his record of 100 professional bouts with 50 knockouts, some of Marcos Geraldo's best fights have been against Thomas Hearns, John L Sullivan, Marvelous Marvin Hagler, Lorenzo Benitez, and Michael Nunn.
The following are Geraldo's top 10 performances, in descending order.
On Marcos Geraldo lost to American boxer Thomas Hearns via 1st round KO. Geraldo was 27 years old with a record of 56-18 (35 KOs). Hearns was 23 years old with a record of 33-1 (30 KOs). Despite the loss, Geraldo put on a good fight till it lasted. The performance in this fight is the number one among all of Geraldo's fights.
On Marcos Geraldo lost to John L Sullivan via 10 round split-decision. Geraldo was 18 years old with a record of 26-5 (15 KOs). Despite the loss, Geraldo put on a good fight. This fight is the second best performance in Geraldo's career.
On Marcos Geraldo lost to American boxer Marvelous Marvin Hagler via 10 round unanimous decision. Geraldo was 25 years old with a record of 53-16 (32 KOs). Hagler was 25 years old with a record of 48-2-2 (40 KOs). Despite the loss, Geraldo put on a good fight.
On Marcos Geraldo defeated Lorenzo Benitez via 2nd round TKO. Geraldo was 24 years old with a record of 52-15 (31 KOs).
On Marcos Geraldo lost to American boxer Michael Nunn via 5th round TKO. Geraldo was 30 years old with a record of 69-21-1 (48 KOs). Nunn was 22 years old with an undefeated record of 7-0 (7 KOs). Despite the loss, Geraldo put on a good fight till it lasted.
On Marcos Geraldo defeated John LoCicero via 10th round TKO. Geraldo was 25 years old with a record of 53-15 (32 KOs).
On Marcos Geraldo defeated Renato Garcia in their 3rd fight via 6th round TKO. Geraldo was 24 years old with a record of 51-14 (30 KOs).
On Marcos Geraldo defeated Leonardo Bermudez via 1st round KO. Geraldo was 26 years old with a record of 54-17 (33 KOs).
On Marcos Geraldo lost to Freddie Mills via 10 round majority decision. Geraldo was 17 years old with a record of 16-4 (8 KOs). Despite the loss, Geraldo put on a good fight.
On Marcos Geraldo defeated Abraham Meneses via 1st round KO. Geraldo was 28 years old with a record of 62-18 (41 KOs).