Jaydn Su'A starred as the Dragons scored five second-half tries to beat the Dolphins 26-6 and move back into the top eight.

Tesi Niu scored the only try of a tense and tight first half to give the Dolphins a 6-2 half time lead.

But after half time it was all one-way traffic for the Dragons.

Tries to Raymond Faitala-Mariner, Christian Tuipulotu, Tyrell Sloan, Jack De Belin and Jacob Liddle got the Dragons into the lead.

Su'A had to play in the centres after starting in the second row, but excelled, running for 216 metres off 22 carries and assisting a try.

Kurt Donoghoe was sent to the sin bin late for the Dolphins, who missed the chance to move back into the top four.