Parramatta have made an early-season statement after a Maika Sivo double powered them to their first win over a full-strength Melbourne in nine years.
Sivo scored the Eels' first and last tries in a gripping 16-12 victory, with his match-winner coming three minutes from fulltime at Bankwest Stadium.
It took the Fijian winger's record to 26 NRL tries in 24 games at the ground, and capped a match played in the rain that at times threatened to boil over.
The flashpoint came when Felise Kaufusi was lucky to stay on the field after being placed on report as his elbow pushed Ryan Matterson's head to the ground in a tackle.
Matterson, who has a long history with concussions, remained on the turf for several minutes before being taken from the field.
The Eels' edge man failed his HIA and did not return, but Eels coach Brad Arthur later admitted he thought rules stated Kaufusi should have been sin-binned.
"I thought that's what would happen, but it didn't so we just have to move on," Arthur said.
Sivo wasn't the only hero for Parramatta, whose only wins against Melbourne since 2012 have been in State of Origin rounds or with the Storm's big guns rested.
"It's one game," Arthur said.
"It's great. If we want to be the team that they are and challenge, we need to make sure we do that every week.
"It doesn't matter who we play. We need to have the attitude of that's how we play. I'll be happy if we do that every week."
Mitch Moses kicked brilliantly and Clint Gutherson defended superbly, making three try-savers playing on a heavily-strapped left ankle.
His first was on a hard-running Nelson Asofa-Solomona as he attempted to barge over the line, before he later stopped Tui Kamikamica.
"When Nelson got held up, he could have done that 20 times and (Gutherson) probably only would have held him up once," Craig Bellamy said.
The fullback's effort on Cameron Munster before halftime was the pick of the night, hitting the ball out of the five-eighth's hand.
Junior Paulo also threatened to score his second match-winner in six days when he charged across with 12 minutes to play, breaking a 6-6 deadlock.
After the Storm had been stuck at their own end for the majority of the second half, their weary defence finally let go.
But the visitors hit back back six minutes later when a Ryan Papenhuyzen kick bounced back into his own legs before Justin Olam picked it up and scored.
That only allowed Sivo to seal the match-winner though, when he took a 30-metre kick from Moses in front of George Jennings and charged over.
Sivo earlier scored Parramatta's first in similar fashion on the left wing when he took a Dylan Brown kick and steamrolled his way to the line.
Melbourne also had their injury concerns, hopeful that a sternum worry for Nelson Asofa-Solomona was just him feeling winded.