St George Illawarra Dragons nudged clear again at the top of the NRL ladder on Saturday, while Moses Mbye ended his Canterbury Bulldogs career with a try and a defeat.

The Dragons have been in fine form this season and, having been joined on 22 points by South Sydney Rabbitohs on Thursday, a 32-8 win over Manly Sea Eagles restored a gap at the summit.

Kurt Mann and James Graham were both on the scoresheet in a one-sided contest, meaning all 15 players to have featured in each of the league-leaders' 14 games have now registered a try.

Mann crossed after 26 minutes to prompt a flurry of tries as Timoteo Lafai and Tariq Sims scored before the break, with Tom Wright responding for Manly.

Gareth Widdop, Graham and Nene Macdonald then completed a commanding victory after the restart.

At the other end of the ladder, the Bulldogs are enduring a miserable campaign, not helped by Mbye's departure to Wests Tigers after the 32-10 loss to the Gold Coast Titans.

The Titans were rampant early on, with Mbye's try on the stroke of half-time already evidently a consolation, following a Michael Gordon brace and scores for Ryan James and Anthony Don.

Canterbury at least prevented total humiliation as John Olive responded to tries from Phillip Sami and Kevin Proctor in the second half, but this was their fourth straight defeat.

Elsewhere, the Brisbane Broncos held on for a 20-16 win against Cronulla Sharks, who had clawed their way back into an entertaining match.

Tevita Pangai Junior scored within a minute and Anthony Milford made it two, but the Sharks scored through Jesse Ramien, Ricky Leutele and Wade Graham to be level in the final 20 minutes, cancelling out Jamayne Isaako's penalties.

There was to be another twist, though, as Corey Oates crossed to secure a hard-fought triumph.