Barnstorming NSW Waratahs hooker Tatafu Polota-Nau delivered two good pieces of news on Monday.

One of the form players in the early weeks of the revamped Super Rugby competition, Polota-Nau confirmed that he'd re-signed with both NSW and the Australian Ruby Union for two more years.

And he also had good reason to be upbeat about the knee injury suffered in the first half of the Waratahs' loss to the Crusaders in Nelson last Friday.

Scans taken on Monday revealed damage to his left posterior cruciate ligament - a better result than if it had been the anterior cruciate ligament.

The resilient 25-year-old rake, with 25 Test caps and 70 appearances for NSW, has missed only three Super games since his debut in 2006.

He hopes a timely bye this weekend will mean he doesn't add to that tally in the short term.

"It's much better that it's the PCL rather than the ACL," Polota-Nau said.

"It's going to be a day-to-day proposition and so the bye couldn't have come at a better time.

"I don't want to miss any footy if I don't have to, but I also don't want to burden the team if I'm not ready to go.

"I've got my sights set on being back in a couple of weeks, but we'll just have to see how it comes along.

The youngest player to attain a half century of NSW caps, Polota-Nau was voted the NSW Players Player of last year.

And he has joined backs Drew Mitchell and Berrick Barnes in re-signing with the state.

"Once I knew I was staying in Australia, my preference was always to remain at NSW and thankfully I've been able to do that, Polota-Nau said.

"We've had a good core group at the Tahs for a few years now and the number of players who have re-signed in the last two years shows we think there's something pretty special here."

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