Kelsey Jones says Wales will have "nothing to lose" and must back themselves when they take on Pool B favourites Canada at the Rugby World Cup. Wales suffered a shock 38-8 defeat by Scotland in their opening game, which realistically means they must beat the second best team in the world next if they are to challenge for the quarter-finals. Canada have already laid down a marker with their 65-7 victory over Fiji. "Right now it's pure disappointment and frustration," said Wales hooker Jones. "We're absolutely gutted, but it's a really good opportunity now to reflect. "We've got nothing to lose, we need to step it up and go against Canada - and a great opportunity against Fiji as well. You never know what can happen, I'm optimistic."