Ireland experienced a second day of contrasting fortunes at the AIBA World Elite Championships and Olympic qualifiers in Doha, Qatar.
Sean McComb advanced, but London 2012 Olympian Adam Nolan bowed out at the last 32 stage despite a massive performance against a current European Elite champion.
McComb beat Lindolfo Garcia-Delgado to progress to the last 16 of an AIBA World Elite Championships for the second time since Baku 2013.
McComb dominated to take the first 10-9 across the board against the lively Mexican lightweight, but despite the Holy Trinity BC man landing the cleaner shots in the second, the judges leaned in favour of Garcia-Delgado.
The Belfast southpaw, however, won the final frame to secure victory - 29-28,29-28,29-28.
He'll now meet Azerbaijan's Albert Selimov on Friday in a repeat of the European Games semi-final which the Azeri won in Baku, Azerbaijan in June.
Selimov, who claimed AIBA World gold in Chicago for Russia in 2007, is the No. 3 seed in Doha.
The former world champion, who received a bye into the last 16, beat McComb 29-28,29-28,30-27 in Baku, with the Irishman splitting the judges in his favour in the last round. Nolan was edged out by Lithuania's Eimantas Stanionis on a split decision (30-27,28-28,29-28) over three, three minute rounds.
Stanionis, ranked No. 13 in the world, got the better of the opening exchanges in the first round, but Nolan finished strong against the AIBA Pro Boxing (APB) fighter.
The AIBA Boxer of the Month for August was in further trouble in frame two, with the Wexford southpaw finding the target with increasing regularity to level the bout on two cards, one judge leaning toward Stanionis.