Fiji will start with one of the biggest backlines ever to play an international with Nadolo approaching 20st. With the exception of canny scrum half Nikola Matawalu, who is nearly 13st, the rest of the backs pack a punch by averaging nearly 16st a man.
Roberts, who stands at 6ft 4in and tips the scales at 17st 5lb, will be dwarfed Nadolo who is an inch taller and more than two-stone heavier.
“Nadolo is a huge physical specimen, he’s a rugby athlete, he’s quick, he’s 19st 10lb and he can off-load the ball as well,” conceded Roberts.
“If you put traffic in his channel, you know he’s not going to be as quick at turning. It’s just like myself, I’m probably not as quick and agile as the small players at turning. We just have to play clever but I’m not going to give too much away.
“I’ve faced a lot of good players in my career but probably none as big as him. But it’s about utilizing our strengths to counter his weaknesses.
“That’s what international rugby is about, those one-percents. You analyse players, you look at their strengths, you look at their weaknesses.”
Wales possess some big units in the backs as well with George North and Alex Cuthbert along with Roberts proof that big is beautiful in head coach Warren Gatlland’s eyes.
“George is very agile and quite springy. He’s bit Shane Williams-esque but still very powerful. But this guy will come straight at you. It’s a bit of a ‘man test’ on Saturday. We have to front up,” added Roberts.
Fiji coach John McKee is hoping his side can bounce back after a heavy defeat to France last weekend as he begins to build towards next year’s World Cup.
“We have a talented side, although we are not at the top of our game yet. We know we can improve and we will be better against Wales than we were in France last week,” McKee said.
“The players were stung by that defeat because their expectations were high. Wales will be challenging but it is a game we can do well in.”
