Marco Antonio Nazareth (12 April 1986 – 22 July 2009) was a Mexican professional boxer.
Nazareth began his professional career in 2005, and until 2009 he racked up a record of four wins and three losses in seven bouts.
In Guadalajara, Jalisco Marco received his first loss to a future IBF Lightweight Champion, Mexican Miguel Vazquez.
He lost the bout via a 4th round TKO, then he collapsed in the ring and had to be taken to the local hospital where he underwent a three-hour surgery to treat a cerebral hemorrhage.
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