Belfast's Sean McComb is through to the last-16 in the 64kg division at the World Championships after he claimed Ireland’s first win in Hamburg.
The three time national champion beat Brazil’s Joedison de Jesus on a split 4-1 decision on the first day of action.
In a keenly contested fight, McComb dictated the first round. The second round was a much tighter affair and although he suffered a cut over his right in the third, McComb did enough to advance.
McComb now faces Cuban Andy Cruz Gomez on Sunday evening.
Earlier, Kurt Walker exited the World Championships on the first day of competition after a battling last-32 defeat to Domincan Leonel De Los Santos.
The Lisburn bantamweight (56kg) was dropped by a right hook De Los Santos in the first round and and was perhaps fortunate to see out the bell.
He showed great heart to fight back and take the fight to his opponent in the remaining two rounds, landing repeated combinations in the third.
The judges, however, gave the decision to his opponent on a 4-1 margin..