The Tipperary super-heavy convincingly beat Korea’s Hyeon Do Kim on a unanimous decision to join Irish captain Joe Ward and Brendan Irvine in the last 16 on Monday.
Kim was on the floor and took a count in the first and the Clonmel BC man found the target with some superb head and body shots in the second and third rounds.
Breakfast will face Cristian Salcedo next. The Colombian was a silver medalist at the American Championships earlier this year.
Rio Olympians Ward and Irvine received byes into the last 16.
Sean McComb, who won yesterday, meets Cuba’s Americas Confederation champion Andy Cruz-Gomez tomorrow evening for a place in the last-eight.
World Elite Championships Hamburg, Germany
56kg Kurt Walker (Ireland) lost to Leonel De Los Santos (Dominican Republic) 1-4
64kg Sean McComb (Ireland) beat Joedison De Jesus (Brazil) 4-1
91kg+ Dean Gardiner (Ireland) beat Hyeon Do Kim (Korea) 5-0
64kg Sean McComb (Ireland) v Andy Cruz-Gomez (Cuba)
52kg Brendan Irvine (Ireland) v Inkyu Kim (Korea)
81kg Joe Ward (Ireland) v Iago Kizira (Georgia)
91kg+ Dean Gardiner (Ireland) v Cristian Salcedo (Columbia)
52kg Brendan Irvine (St Paul’s)
56kg Kurt Walker (Canal)
64kg Sean McComb (Holy Trinity)
81kg Joe Ward (Moate) captain
91+kg Dean Gardiner (Clonmel)
Team manager/High-Performance Director: Bernard Dunne
Coaches: Zaur Antia, John Conlan and Dmitry Dimitruc
Doctor: Jim Clover
Physio: Seamus Caffrey
Performance Analysis: Alan Swanton