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Wests Tigers co-captain Russell Packer says his side's energy is focused on Friday's game against the Newcastle Knights and not on last week's disappointing loss.

While talk throughout the week has been centred around the missed chance against the Bulldogs, Packer said it was crucial for his side not to dwell on the defeat with a potential finals berth still possible.

"Not really cranky at the game, just more disappointed," Packer told reporters on Wednesday.

"But you have to compartmentalise things and move on because we've got a really tough game against Newcastle on Friday. We've got to get up for that game and put in a better performance.

"We've had honest talks about what went wrong and a commitment from our team to fix what went wrong.

"I don't know if there's a blueprint for getting over losses in rugby league.

"Everyone deals with things differently but at the end of the day, people want you to get up for the next game you've got coming and that involved getting over the loss you've just had.

"It's not easy but we definitely looked at ourselves throughout the week.

NRL.com preview Knights clash

"It's two days away from our next game, so if we're still dwelling on last week's game it's probably not the best thing for our preparation. In saying that, we definitely looked at our game with a fine tooth comb and know that we need to improve and be better and we've got a good opportunity this Friday."

Wary of not looking too far down the track past Friday's game against the Knights, the co-captain Packer said his side's performance on the weekend was going to need to come down to a "great team effort."

"They're a good side and they get good crowds at home so it's definitely a tough one," he said.

"It's going to need a great team effort and performance to give ourselves a chance of winning this week.

"They've particularly got a lot of good forwards and a world class halfback in Pearce. With Ponga at the back, they're dangerous and you can't be taking them lightly given how good they can be.

"We're going to need to play a lot better to win and this week is going to be a tough one."

See what Russell Packer had to say in full about this week's game in the video above!