England second-rower Ben Westwood has expressed his excitement at going up against New Zealand star Sonny Bill Williams.
The 28-year-old has been identified as New Zealand's main threat ahead of the World Cup semi-final on Saturday.
"There's no two ways about it, he's a world-class athlete," BBC Sport quotes Westwood as saying. "The things he does a lot of people can't do.
"It's exciting. I've never played against him before. It's good to test yourself against the best in the world and that's probably what he is. It's one I'll look forward to. I'll try to do my best against the best. It will be a good contest I'm sure."
New Zealand are the current holders of the World Cup following their successful campaign in Australia in 2008.
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