NSW Origin star Trent Merrin scored a crucial try before leaving with a knee injury as St George Illawarra beat Gold Coast 19-18 on Sunday at the CBUS Super Stadium in Robina.
Merrin ran over the tackle of Titans debutant Daniel Mortimer before touching down but, shortly afterwards, was helped off the ground and did not return.
The Titans' hopes of a comeback were hindered by another Origin player Nate Myles being sin-binned for complaining to the referee about a block before the try.
Gareth Widdop's field goal eight minutes from time extended the lead to seven points, which proved crucial when Brad Takairangi ran down the left sideline for a try and Greg Bird converted to bring the Titans within a point.
In a battle between two out-of-form sides, with the Titans having lost five straight and the Dragons boasting just one win in six, the 12,189 in attendance perhaps unsurprisingly witnessed a scrappy affair.