THEY have already passed one test, but the newest iteration of the Warrington Wolves right edge will no doubt get another in Sunday’s Challenge Cup semi-final.

While George Williams, Matty Nicholson and Josh Thewlis’ places have been pretty set in stone, the centre role has been much more in flux.

Rodrick Tai is the man in possession having started the past two games, with Connor Wrench holding down the spot before suffering an ankle injury in the win over Leigh Leopards while Stefan Ratchford has also spent time at right centre.

Opponents have picked out the right edge as a potential chink in the Wire armour and having repelled the vast majority of what Hull KR threw at them, they will likely get another working over by a Huddersfield left edge containing prolific winger Adam Swift and Super League’s second-highest metre-maker in centre Esan Marsters.

Wrench is battling to be fit for the game but if he does not make it, Tai is set to keep his spot and after an injury-hit start to life in England, Burgess believes the Papua New Guinea international is starting to show positive signs.

“It’s taken him a while to adjust to the weather and the climate change,” he said.

“He arrived and went straight into an army camp in Kent, which was a nice “welcome to England” for him!

“Then he had the knee surgery which put him out for a while, but I always knew he’d come good. I think the drier tracks are helping him out as he’s used to that.

“He’s a long way off being anywhere near what I think he can be, but he’s starting to show what he can do.

“That edge got asked a lot of questions on Thursday night – Hull KR throw a lot at teams and they threw a lot at us.

“We coped with it pretty well down both sides, but they probably had three times as many shots down our right and we managed it quite well bar the one time they broke us down.”