The 25 - year - old is disappointed with that performance .
The 25 - year - old promises a return to the form that made him the nation 's most decorated amateur fighter when he meets Jonathan Del Rosario on Feb. 7 in Las Vegas .
The 25 - year - old is disappointed with that performance and promises a return to the form that made him the nation 's most decorated amateur fighter when he meets Jonathan Del Rosario on Feb. 7 in Las Vegas .