Mitchell Moses' 69th-minute penalty proved crucial as the Parramatta Eels ran out 14-12 winners against Cronulla Sharks at a soaking Netstrata Jubilee Stadium.
Veteran Shaun Johnson set up two of the Sharks' three tries and his playmaking was generally excellent but his failure to execute any of Cronulla's conversions proved crucial.
Dylan Brown and Kane Evans tries in either half had the Eels ahead, with Jesse Ramien's score the Sharks' only first-half points.
A quickfire double from Ronaldo Mulitalo tied up a hectic game, which saw handling errors mixed with supreme skill in torrential rain.
But ultimately it was Moses' kick after Braden Hamlin-Uele took out Reagan Campbell-Gillard off the ball that proved decisive and moved the Eels to third on the NRL ladder.
In Sunday's other NRL contest, Alexander Brimson inspired Gold Coast Titans to a 30-10 triumph over the North Queensland Cowboys.
A stunning first half saw the full-back score two tries, create another and save one at Cbus Super Stadium.
Anthony Don, Kevin Proctor, Brian Kelly, Phillip Sami also touched down in a six-try outing for the Titans, who earned the Queensland bragging rights to jump ahead of the Cowboys into 13th.