A back injury to Mark Andrews might give Hottie Louw the big chance to prove himself in elite company in Cardiff on Sunday when the Springboks take on the Barbarians.

"Mark injured his back at training, but he has been included in the team and a final decision on his fitness will be made at a later stage," Springbok media manager Freddie Hendriks said.

As expected Springbok coach Harry Viljoen included talented utility back Gaffie du Toit at fullback for the final game of their six-week tour at the Millennium Stadium against a star-studded Barbarians team, which resembles a world XV.

Percy Montgomery reverts back to flyhalf in place of Braam van Straaten, who is demoted to the substitutes bench. Chester Williams is also back in the mix, replacing Stefan Terblanche at left wing, and this is expected to be his swansong at international level.

Viljoen said Corne Krige is struggling with a finger injury and is expected to only play in the first half. The coach hasn't named a bench, but the plan is to give all nine the non-starters a run on Sunday.

Louw (pictured) will, however, be hoping he can start the match. He has impressed thus far on tour and some felt his bulk and aggression could have served the Boks well against England.

Substitute hooker Charl Marais will be relishing the opportunity to run out again. Marais played three games in the space of eight days at the start of the tour, but since then he has had to be content with watching the game from the sidelines.

Midweek captain Dan van Zyl, who won his first Test cap last week when he came on as substitute against England, is keen to take on Barbarians scrumhalf Augustin Pichot of Argentina.

"Now that I've played in a Test, I'm hungry for another chance. I hope I get a chance to play on Sunday," said Van Zyl.

The spotlight will, however, be firmly on Du Toit, who has a big chance to redeem himself in top-class company after his fall from grace last year.