Parish says with good performances from the entire side, they could be in with a chance.
"I sound like a broken record here but it's our execution," he said.
"We created opportunities against the Broncos but couldn't finish them off. Our effort was really good and we tried really hard, we just need to be a lot smarter, and the mistakes we're making at the moment are costing us dearly."
With that in mind, Parish says he's hopeful for an improved showing from 1-17 tonight.
"It's a massive task we've got tonight, playing Melbourne in Melbourne, and they've got arguably the three best NRL players in their team in Smith, Cronk and Slater," he said.
"So stopping them will be a huge task but we've got a few surprises for them tonight and hopefully, if we can complete our sets we might give them some trouble."
Regarding specific match-ups for tonight's game, Parish says he'll be watching the halves combination and our forwards.
"Ben Roberts has been playing really well for us lately, and he gets a chance back at five-eighth, so him up against Cooper Cronk, we need him to play well," he said.
"Luke Kelly is playing against his old club so he needs to lift, and I think our forwards have been playing quite well lately, so if they can take control in the middle then certainly we can create some opportunities off that."
Click here to see what Eels fullback Jake Mullaney had to say about tonight's game.