If anything, Cotto's heart has been tested a lot more than Marquez IMO. Marquez's most grueling fights were both against Pacquiao. Cotto was rocked twice early on in his career only to come back and win both fights by KO. He went to war with Margarito and fought with a badly cut eye for a good majority of his fight with Clottey.
The only comparison I have with both is they have ring smarts and are patient fighters who wait for the opening.
The only comparison I have with both is they have ring smarts and are patient fighters who wait for the opening.
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