Chen went to Havana , Cuba at 170 lbs. and fought a Cuban heavyweight named Espagaguerra , and lost .
Chen 's manager had him change his professional boxing name from Nero Chen to El Negro .
Nero Chen went to Havana , Cuba at 170 lbs. and fought a Cuban heavyweight named Espagaguerra , and lost .
Chen 's manager had him change his professional boxing name from Nero Chen to El Negro .