Wests Tigers captain Robbie Farah says three NRL wins in a row will count for nothing unless his side can get up against Manly at the Sydney Football Stadium on Monday night.

The rejuvenated Tigers have toppled South Sydney, North Queensland and Canberra in recent weeks but face a resurgent Manly, who have won six of their last seven matches.

Farah says the Tigers feel they have the momentum behind them heading into the must-win clash and defence will be the key.

"There's a bit of confidence within the camp but we know the last three weeks mean nothing unless we show up on Monday night," Farah said.

"It's going to be a good challenge for us because Manly are in good form too.

"We're obviously going to have to improve on the way that we've been playing.

"I think defensively we've been pretty strong in the last month and we're going to have to be strong defensively again.

"They've got stars all over the park so we're going to have to be at our best."

The Tigers currently sit just outside the eight and still face an uphill battle to make the finals.

Farah says the Tigers will continue to play each game like their season depends on it.

"Three wins in a row is all good and well but another loss this week and again, people will be talking about us missing the eight," he said.

"So we're not even in the top eight at the moment and a win this week isn't going to cement our spot in the top eight.

"So I've said it in the last few weeks, and I'll keep saying it, we're going to have to keep playing do-or-die footy every week from now until the finals."

After a lacklustre start to the season, Manly have found form at the right time, and are aiming to secure a spot in the top four.

The defending premiers have been boosted by the return of Jamie Lyon at five-eighth while Steve Matai is back in the centres and Chris Bailey returns on the bench.

In a worrying statistic for the Tigers, Manly have beaten them in their past five meetings.

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