Manly has fallen to its fifth straight NRL loss after butchering a wonderful opportunity to put Parramatta away at Brookvale Oval on Sunday.
The Eels recorded a heart-stopping 32-26 victory in front of almost 14,000 fans, but not before overcoming a 14-0 deficit.
The home side wasted several decent try-scoring chances, including one with two minutes remaining which should have given them victory when trailing 28-26.
Albert Torrens crossed the line and referee Sean Hampstead was poised to award the try before receiving word from his touch judge the last pass from Jai Mullane was forward.
Sixty seconds later David Vaeliki recorded a legitimate four-pointer that guaranteed back-to-back wins.
But while the finish was miserable for Manly, their first quarter offered the promise of an outstanding afternoon over their old rivals.
Early converted tries to Andrew Walker and Steve Menzies along with a penalty goal, sent them out to an encouraging 14-0 break, before Parramatta struck back to snatch a surprising halftime lead thanks to 18 points in 11 minutes.
Kane Cleal regained the upperhand for the hosts nine minutes into the second half, but that was the last time they enjoyed the lead because just two minutes later, Eric Grothe Junior plucked a bomb from the air and bolted 85 metres to score and make it 24-20.