Cronulla have climbed to third on the NRL ladder, after a tense 11-2 victory over the Melbourne Storm at a wet AAMI Park.
The defending premiers relied on tough defence to outlast the Storm in a rematch of the 2016 Grand Final, played in the tricky conditions.
The Sharks let an error-prone Melbourne off the hook in the opening half, by failing to capitalise on several scoring opportunities, but finished over the top of the home side, with 11 unanswered points in the second half.
James Maloney kicked a field goal in the 70th minute to break a two-all deadlock, before James Segeyaro swooped on a kick that was mishandled by Billy Slater to touch down under the posts and seal the result.
The Sharks have now won three straight matches, ending the Storm's unbeaten opening to the season in the process.