The Kildare bantamweight lost on a unanimous decision to India’s Kumar Akash.
McCarthy drove home big shots in all three rounds, two sweeping hooks in the opening exchanges, solid rights at the end of the second and a fine uppercut in the third were the pick of his punches.
But the judges opted for the relentless aggression, punch volume and work ethic of Akash. Finals scores – 30-27,30-27,29-28,29-28,29-28.
Daine Moorehouse is in action at approximately 5pm this afternoon (Irish time) versus Marta Lopez Del Arbol of Spain.
Moorehouse beat the Andalucia light-fly on a unanimous decision en route to gold at the European Youths earlier this year.
Image: McCarthy and Moorehouse after this morning’s weigh-ins.
AIBA World Men’s and Women’s Youth Championships Budapest, Hungary
56kg Brandon McCarthy (Ireland) lost to Kumar Akash (India) 0-5
48kg Daina Moorehouse (Ireland) v Marta Lopez Del Arbol (Spain) (evening)
57kg:Dearbhla Rooney (Ireland) lost to Panpatchara Somnuek (Thailand) 2-3
52kg:Dean Clancy (Ireland) lost to Asa Stevens (USA) 2-3)
51kg Caitlin Fryers (Ireland) v Kittiya Nampa (Thailand) (afternoon)
49kg Jude Gallagher (Ireland) v Renuex Zhao (China) (evening)
75kg: Lauren Kelly (Ireland) v Tallya Brillaux (France) (afternoon)
48kg Daina Moorhouse (Enniskerry)
51kg Caitlin Fryers (Immaculata)
57kg Dearbhla Rooney (Sean McDermot)
75kg Lauren Kelly (St Brigid’s Edenderry) Cpt
49kg Jude Gallagher (Two Castles) Cpt
52kg Dean Clancy (Ballinacarrow)
56kg Brandon McCarthy (St Michael’s Athy)
Team managers: Stephen Connolly and Tara Mari Robins
Head coach: Billy McClean
Coaches: Michael Carruth, Michael Mongan, Anita Just
Physio: David Cooke