The Boks are second on the log in Pool B on 10 points, four behind Ireland who lead the group on 14 points.

Tonga are in fourth place without any points after suffering defeats against Ireland and Scotland – two of the strongest teams in the pool on the world rankings – but the Boks are not leaving anything to chance to book their place in the top eight and they are determined to get their campaign back on track and to build momentum after going down 13-8 against Ireland last weekend.

“It’s a big week for us against Tonga,” said Springbok fullback Willie le Roux.

“This is knockout rugby for us and it’s going to be brutal because they have some big guys playing for them.

“It’s going to be a physical match and I think there’ll be some sore bodies after the game. Our defence will have to be up for it because they have players that can spark anything from anywhere.”

Marvin Orie grabs a lineout in the match against Romania.

Springbok lock Marvin Orie also expected a massive onslaught from the Pacific Islanders in the set pieces: “They have a lot of big and athletic players. They are hard hitters as one can see, so we are expecting challenging scrums and lineouts. Many of their players have also played at a high level, so it will be a tough match.”

Le Roux was realistic about the role he played in the Rugby World Cup squad despite being one of the most experienced players in the squad with 89 Test caps, saying with such good depth in the group, no one could take their place in the team for granted.

“On a personal note, I just want to do my best, enjoy myself and to try to make the team win,” said Le Roux. “We have such great depth in the team, one cannot get comfortable in a jersey. We keep pushing one another to get better.”

Orie, meanwhile, was excited about joining forces with his former Tygerberg High School team-mate, Bok centurion Eben Etzebeth, in the second row this weekend: “Eben is a world class player, he’s played over 100 Tests for South Africa. His game is also at a high level, and he inspires us all to reach our best through the standards he sets.”

The match at Stade de Marseille kicks off at 21h00 on Sunday and will be broadcast live on SuperSport.