The legs are falling off St George Illawarra's bid for an NRL finals berth - literally.

The Dragons were dealt a quadruple injury blow with props Justin Poore and Jason Ryles, skipper Mark Gasnier and fullback Brett Morris all ruled out of Friday night's crunch match against Wests Tigers due to injury.

Poore is unlikely to play again during the regular season, the dislocated kneecap he suffered in Saturday night's 13-12 loss to Cronulla requiring a 4-6 week rehabilitation.

Ryles' quad strain is at least another week away from being right while Gasnier (corked leg) and Morris (AC joint) should both return against Brisbane next week.

But the Dragons could find themselves out of the top eight by the time they face the Broncos on Friday week, with the Tigers one of seven other sides chasing the three remaining finals berths.

"They've been two of our best players all year and both are probably in the best form of their career," Brown said of starting frontrowers Poore and Ryles.

"They're playing a lot of consistent footy and along with Ben Creagh, they're probably our three big guys.

"It just means blokes like Matty Prior, who was outstanding the other night and Ricky Thorby are going to get a little bit more time - which they're crying out for anyway - and Dan Hunt now becomes our No.1 front rower so it puts a little bit more pressure on Dan as well.

"There's some good challenges there for different guys ... these things happen, you've just got to be good enough to get yourself over them."

The backline injuries should result in a top grade recall for Wendell Sailor, which may see Jason Nightingale switch to fullback for the WIN Stadium clash.

While it was all bad news at the Dragons, Tigers halfback Robbie Farah admitted he was racing the clock to overcome an ankle injury.

Scans revealed no bone or ligament damage but the Tigers linchpin was still favouring the leg on Monday.

"With the short turnaround it's not the best scenario for myself, the five-day turnaround, but I'll do everything I cane to get on the field," Farah told reporters.

Meanwhile, the Bulldogs may finally get some relief from their injury woes with Jarrad Hickey (ribs) Corey Hughes (ribs) and Matt Utai (knee) all rated some chance of returning against North Queensland on Saturday night.

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