Wests Tigers centre Chris Lawrence is confident he will be fit for the NRL finals after dispelling fears a hamstring injury suffered in Friday night's win over St George Illawarra could have been related to his hip dislocation.

Lawrence sent Tigers fans' hearts to their mouths when he left the field soon after playing a major role in his side's match-clinching 75th-minute try.

The injury is on the same side as the hip he injured in round three against Canberra and which sidelined Lawrence for four months.

Coach Tim Sheens said it was possible the Test centre could experience problems in his right leg over his career.

But Lawrence said a pre-season of strength work could prevent that.

"I got all the strength back in my hip and everything like that but it's obviously going to take me a full pre-season to get everything a hundred per cent the same strength," he said.

"That's with every injury.

"When you're off for so long it doesn't matter how much work you do on it, it's going to take months and months of rehab so we'll see.

"My right side's probably just a little bit weaker than my left.

"After a full pre-season of really hammering the strength on it, it should be fine."

Lawrence underwent an ultrasound immediately after the 16-14 Sydney Football Stadium victory and will have MRI scans over the weekend.

"It's a bit sore, we'll see how the scans go over the weekend and hopefully it's not too bad, it's only a few weeks," he said.

"(The ultrasound) showed that there wasn't a major tear which means it's not top-end scale but there's definitely something little there so it's probably low range.

"We've still got four or five weeks till the finals so that's good for me, it gives me a good chance to come back."

Lawrence said he'd been more concerned about the Tigers scoring to overhaul a 14-12 Dragons lead than the injury.

"I accelerated to try and kick away and felt it go," he said of the 70m Tigers effort.

"I knew if I passed too early I'd bomb the try so I just tried to hold on and draw the man.

"Lucky enough we got the try."

St George Illawarra five-eighth Jamie Soward suffered back spasms and left the field in the 66th minute, while back-rower Beau Scott suffered a hamstring problem.

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