Meantime, Limerick’s Cormac Long lost out in his bid to reach the quarter-finals despite a brave display against medal favourite, Rustan Ibraikhaliev of Russia.
Long took a standing count in the first, but fought back very well in the second and had a fine third, one big right over the top rocking the Russia in the final minute.
Stylish Cork southpaw Luke O’Shea was beaten in the opening bout of the evening session in the Ukrainian capital.
The two-time Irish champion lost to Israel Picazo in the pin-weight class, the Mexican orthodox earning a unanimous decison.
O’Shea countered very well throughout this three-rounder, but Picazo’s more aggressive approach was enough to catch the eyes of all three judges following an evenly matched 46kg encounter.
Derry flyweight Ryan Green progressed to the last-16 after hammering out a unanimous decision over Kuwait’s Yousef Saeed.
Green (Oakleaf BC) took all three rounds and obliged his awkward opponent to take a standing count in the third.
He’ll now face Armenia’s Gamik Papikyan, who edged out England’s Sydney Williams on a split decision,on Wednesday
Irish captain John Joyce outclassed Cuban champion Yolevis Diaz in yet another all-southpaw duel involving an Irish boxer in the final bout of the night.
Diaz took a standing count in the first off a backhander as the ex European Schoolboy champion dominated the opening exchanges of a tactical three-rounder.
The St Michael’s Athy man was also in control of the second and saw out the third to post a classy victory.
Irish team manager Jim Walsh said they were were delighted with yesterday’s wins and the performances of the Ireland team.
Six Irish boxers will be in action Wednesday aiming to join Sean Conroy in Thursday’s quarter-finals.
The quarter-finals will be held on Thurday in Kiev, Friday is a rest day,
The semi-finals and finals (according to the official schedule) will be heldSaturday and Sunday.
AIBA World Junior Championships (Last 32 unless stated)