Louis Rees-Zammit expects 'tough' test v Portugal

Louis Rees-Zammit has underlined Wales' "game by game mentality" as they target a second successive Rugby World Cup victory that would strengthen their quarter-final ambitions.

Wales, fresh from a thrilling bonus-point victory over Fiji, tackle Pool C minnows Portugal on Saturday.

A showdown with Australia follows eight days later in Lyon, then Georgia in Nantes, as Wales chase a fourth last-eight appearance on the bounce.

"We got the win (against Fiji), which was the main thing, but there is a lot to improve," Rees-Zammit said.

"We’ve got Portugal next and we know they have got great backs, so it’s going to be a tough game.

"We have got a game by game mentality, and that is our focus. You can’t slip up.

"We respect Portugal. We know they have got some great backs, so we are going to have to train hard this week and get the job done."

Wales head coach Warren Gatland has made 13 changes to the starting line-up, with only wing Rees-Zammit and number eight Taulupe Faletau remaining from last weekend.

Co-captain Dewi Lake leads Wales after recovering from a knee injury, while scrum-half Tomos Williams wins his 50th cap and there are first World Cup starts for the likes of centre Mason Grady, plus Exeter locks Dafydd Jenkins and lock Christ Tshiunza.

Lake suffered a knee problem during Wales’ World Cup warm-up game against England, but he now returns to pack down alongside front-row colleagues Nicky Smith and Dillon Lewis, and fly-half Gareth Anscombe is also back after injury.

Grady, meanwhile, is partnered in midfield by Johnny Williams, Leigh Halfpenny wins his 101st cap at full-back and another experienced campaigner – flanker Dan Lydiate – also features.

At the age of 34 years, eight months and 26 days, Halfpenny will become the