Sullivan's upper class show in Irish schoolboy championships title bid
Sullivan Upper sent out a warning that they want to win the all-Ireland schoolboy championships for the first time by knocking up a double figure win on the first day.
Coaches Paul Osborne and Andy Williamson watched their side chalk up a 12-1 win over fellow Ulster school Cookstown High to lead Group D.
John Matchett top-scored with four while Ross Hancock, Matthew Crookshanks and Calum Robson each got two.
Otherwise it was mixed fortunes for Ulster schools in the series being staged over three venues in Belfast.
Group A saw RBAI crash 7-3 to reigning champions St Andrew's College but Wallace High started well with a 7-0 success, with Matthew Nelson, Andrew O'Hare and Jacob Herman scoring two each.
Banbridge Academy crushed Royal & Prior 5-1 in Group C while Friends drew 1-1 with Ashton but Regent House lost 5-0 to Wesley College.
The second series of pool games continue today at Queen's, Deramore and Shaw's Bridge with places at stake for Friday morning's semi-finals.
Meanwhile, Cookstown's Ian Sloan scored the winner as Great Britain beat Argentina 2-1 in a friendly.