After disappointing performances against France and Spain, Wales showed encouraging signs of improvement against England a fortnight ago and will be hoping that they can end their Six Nations on a high.
Wales have been dogged by injuries since the start of their campaign and more changes have been made to the squad. Catrin Edwards, who had a superb game against England, starts at prop with Kath Lenaghan on the bench still recovering from a shoulder injury. Jackie Morgan plays at hooker as Jamie Kift struggles with a knee injury that could make her doubtful for the World Cup next month.
Fly Half Awen Thomas regains her place with Rhian Wilmott out due to a recurring back problem. The Scrum Half shirt goes to Ronnie Owens who seems to be back on form with Kerry Jenkins playing for the 'A' squad and Cath Walkley on the bench. Flanker Angharad Phillips is promoted from the 'A' squad but does not start.
Caernarfon player Kate Jones, who received her first cap against England a fortnight ago, starts at Full Back as Naomi Thomas is in plaster with a suspected stress fracture in her ankle. UWIC Winger Hayley Baxter takes a place on the bench and will be hoping to gain her second cap following her debut against England.
It will be a memorable game on Sunday with it being the last 6 Nations match for several of the senior players as they are likely to retire after the World Cup. It will also be the last home game for Head Coach John Williams as he intends to move on after the World Cup in Barcelona this summer.
Sunday will be a festival of Women's rugby at Llanelli, with the U16's and the 'A' squad playing in the morning followed by the full international kicking off at 2.30pm.
Under 16's and Senior Citizens free. Adults Â£5. Season ticket holders Â£1. Tickets are available on the gate.
WALES 1 Dawn Mason 2 Jackie Morgan 3 Catrin Edwards 4 Liza Burgess 5 Helen Edwards 6 Kylie Wilson 7 Pip Minto 8 April Dent 9 Ronnie Owens 10 Awen Thomas 11 Sue Jones 12 Melissa Berry CAPT 13 Louise Rickard 14 Claire Flowers 15 Kate Jones 16 Dee Croft 17 Kath Lenaghan 18 Sue Grainger 19 Angharad Phillips 20 Hayley Baxter 21 Karen Mayze 22 Cath Walkley
SCOTLAND 1 Karen Findlay 2 Vicky Wiseman 3 Ali Christie 4 Lee Cockburn 5 Claire Muir 6 Jennifer Sheerin 7 Fiona Gillanders 8 Donna Kennedy 9 Paula Chalmers 10 Denise Fairbairn 11 Angela Hutt 12 Niki MacDonald 13 Rimma Petlevannaia 14 Jennifer Dickson 15 Sarah Higgins 16 Ali MacKenzie 17 Vicky Galbraith 18 Jennifer Hanley 19 Beth Macleod 20 Gill Gibbon 21 Mary Pat Tierney 22 Ali McGrandles.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series