10 Dec, 12:23
Ireland's John Lacey will referee his first ever RBS 6 Nations match in February, while Alain Rolland is also included in the Elite Panel in what is his last season.
Replacements: Cillian Walsh, Peter O'Shea, Alan Kennedy, Anthony Kavanagh, Geoff Ryan.
Replacements: Will Foley, John Leahy, Darren O'Shea, Eoin O'Shaughnessy, Barry Keeshan.
Garryowen dominated the second half but could manage only a single try thanks to a resolute Dolphin defence.
But they were eventually breached when former Clontarf captain Barry O'Mahony got in after a fine back-line move which involved five players.
Gavin put over the conversion and then added his fourth penalty to complete a win that will enhance Garryowen's hopes of a higher placing than last season.
Their new assistant coach and former captain, Paul Neville, said afterwards: "It is only our first game. There is a long way to go but it was the start we needed."
Referee: Eanna O'Dowd (IRFU)