Some fans believe it was Guerrero 's fourth loss in his last five fights , because he won a controversial 10 round decision over Aron Martinez in his last fight in June of last year .
The defeat for Guerrero was his third loss in his last five fights .
Some fans believe Guerrero was Guerrero 's fourth loss in his last five fights , because he won a controversial 10 round decision over Aron Martinez in his last fight in June of last year .
The defeat for Guerrero was his third loss in his last five fights .