The 27 - year - old took his professional record to 12 - 0 - KO10 with a dominant performance against his childhood friend Coyle .
The 27 - year - old won a gold medal at the 2012 London Olympics .
The 27 - year - old , who won a gold medal at the 2012 London Olympics , took his professional record to 12 - 0 - KO10 with a dominant performance against his childhood friend Coyle .