In total, 13 quarter-finals were decided at headquarters.
In a rematch of the 2016 final, super heavyweight Dean Gardiner defeated Thomas Carty, while there was also a win for reigning champion Martin Keenan.
At lightweight Frankie Cleary overcame Sean Duffy in a competitive contest while defending champion Pat Mongan got up and running with a win over Dylan Duffy.
Welterweight saw Michael Hennessy defeated by Eugene McKeever, however there was a sizeable portion of those in attendance that disagreed strongly with the verdict. Making his debut in the tournament, Kieran Molloy impressed in beating Fergal Redmond.
The opening bout of the evening had Evan Metcalfe triumping over Adam Courtney in a fiery Dublin derby and Christian Cekiso had a big win over Tommy Casey.
56kg Evan Metcalfe (Hyland Academy) beat Adam Courtney (St Marys Dublin) 3-0
56kg Thomas McCarthy (Setanta) W/O
56kg Christian Cekiso (Portlaoise) beat Tommy Casey (St Francis) 5-0
60kg Patrick Mongan (Olympic Galway) beat Dillon Duffy (Pegasus) 4-1
60kg George Bates (St Marys Dublin) beat Shane Flavin (Paulstown) 5-0
60kg Francis Cleary (Ballina) beat Sean Duffy (Holy Trinity) 5-0
60kg Adam Kelly (Portlaoise) W/O
69kg Kieran Molloy (Oughterard) beat Fergal Redmond (Arklow) 5-0
69kg Eugene McKeever (Holy Family D) beat Michael Hennessy (St Monicas) 5-0
69kg Tony McGlynn (Crumlin) beat David Barrett (Rylane) 4-1
64kg Wayne Kelly (Portlaoise) beat Matthew McCole (Dungloe) 5-0
91+kg Martin Keenan (Rathkeale) beat Geoffrey Kavanagh (Glasnevin) 4-1
91+kg John McDonnell (Crumlin) beat Antoine Griffin (Celtic Eagles) 4-1
91+kg Patrick Nevin (St Michaels Dub) beat Konstantin Popovcuic (Crumlin) 4-1
91kg+Dean Gardiner (Clonmel) beat Thomas Carthy (Glasnevin) 5-0