The USA have won their first Rugby World Cup match since 2003 with a 13-6 triumph over Russia in their Pool C game in New Plymouth.

The IRB world rankings suggested it would be a tight affair between the USA, ranked 18th, and Russia, a place below and appearing at their first World Cup.

It proved to be so, but the physical Russians took it to the more experienced American side, especially up front, to ensure they knew they were in a contest.

While the scoreline indicated a dour affair in challenging New Plymouth conditions, it was a gripping contest between two determined sides that were unwilling to yield on defence - even if they were bereft of attacking ideas.

A trading of first-half penalties between USA fullback Chris Wyles and Russian No.10 Yury Kushnarev was separated by scrum-half Mike Petri's 19th-minute try, until Wyles added another three-pointer midway through the second half to make the game safe.

Outside centre Konstantin Rachkov kicked a 76th-minute penalty to make for some nerve-jangling final minutes for both sides, but USA held on to win what had been dubbed the 'Cold War rematch'.

The majority of the scoring came in the first 20 minutes, courtesy of Kushnarev writing his name into the records books as Russia's first point-scorer in the third minute and Wyles' effort nine minutes later.

The only try of the evening owed to the brilliance of the Suniula brothers, fly-half Roland and inside centre Andrew, a former Manly Sea Eagles NRL player.

Roland made the initial break, feeding Andrew and Petri cut towards the posts on a perfect line to score a try that needed confirmation from the TMO.

The rain came down in bucketloads during the half-time break, putting a spanner in the works of any plans either side had of mounting meaningful raids on their opposition's line.

There was also a lack of poise in the attacking zones, especially by the Russians who defaulted to an option of kicking over the defensive line any time they found themselves within a sniff of the line.

A powerful run by Andrew Suniula almost got USA across on 60 minutes, but desperate cover defence cut him down.

While that was a golden opportunity to kill off the Russians, USA made it all but safe when Wyles knocked over an easy penalty with quarter of an hour remaining to ensure their opponents had to score twice.

Rachkov, taking over from the wayward Kushnarev, did so with four minutes to go but a final-minute raid on USA's line did not come to fruition.

The victory meant a jubilant USA side have now beaten Russia in all four of their meetings at Test level, by margins of 30, 17, seven and now 10.

It was only their third triumph at World Cups, against 16 defeats including their opening 2011 loss to Ireland, 22-10.

Russia next meet Italy on Tuesday on Nelson, while the USA play Australia in Wellington on Friday.

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