In Temple Hill the home side looked in serious trouble when they trailed 24-9 at half-time. However Con scored two second half tries - from Dave O'Brien and Cronin Healy - and with Pat McCarthy in immaculate form with the boot they ended up sharing the spoild 27 points apiece.
Clontarf led Dolphin 20-8 by half time thanks to tries from Donovan Rossi and Ben Wakeley both converted by David McAllister who also added two penalties. Andrew Finn (try) and John O'Mahoney replying for the Cork side. A further try from Dara O'Shea, again converted by McAllister saw 'Tarf race further ahead. Finn scored his second try and O'Mahoney added two more penalties but the home side ran out comfortable 30-19 winners.
Elswhere Lansdowne kick-started their season with a 18-15 win over Dungannon at Lansdowne Road.
Shannon were 15-6 winners over Belfast Harlequins in Thomond Park and St Mary's College lost 23-18 to Blackrock College in Templeville Road.
AIB League Division OneBallymena 18-15 Garryowen Cork Constitution 27-27 U.C.D.Clontarf 30-19 DolphinLansdowne 18-15 DungannonShannon 15-6 Belfast HarlequinsSt. Mary's College 18-23 Blackrock College.
AIB League Division Three Barnhall 16-18 Young MunsterD.L.S.P. 18-8 U.L.BohemiansDublin University 22-4 Old Crescent Sunday's Well 13-33 Old BelvedereTerenure College 18-17 Midleton
AIB League Division ThreeBallina 11-20 HighfieldBanbridge 21-20 ArdsCity of Derry 35-8 Old WesleyCorinthians 17-20 SkerriesNaas 24-8 SuttoniansInstonians 34-16 Queens University Portadown 6-20 WanderersConnemara 15-18 Greystones