The hosts had started the night bottom of Pool Four after a loss at Glasgow Warriors in the opening round but an opening try from Jean-Luc du Preez set the tone for a dominant display.
The 30-year-old, who is out of contract at the Gallagher Premiership outfit at the end of this season, suffered a serious knee injury last January versus La Rochelle in an Investec Champions Cup pool match in Manchester.
Warren Gatland's wish for more muscular players will not be quickly - or easily - satisfied.
Welsh legend Gareth Edwards has said that it has taken 50 years for a player to be compared to him, but has no problem with the comparison that is now being made with newly crowned World Rugby men's sevens player of the year Antoine Dupont.
A Duncan Weir penalty helped Glasgow seal a 17-15 United Rugby Championship win over Scarlets at Scotstoun.
No one is expecting Wales to beat South Africa but the performance will go a long way to proving Gatland retains the faith of his players
ustralia were beaten by Wales 40-6 at last year’s Rugby World Cup, but the men in gold have turned a corner after beating that same rival 52-20 in Cardiff.
The rugby codes unite at Headingley later this afternoon for the first time in 22 years for the first-ever 13-a-side ‘745 Game’, which has been named after the shirt numbers worn by Rob Burrow, Ed Slater and Doddie Weir.
Wales great Dan Biggar has rated former Ireland captain and his British and Irish Lions team-mate Johnny Sexton as the toughest player he has ever faced.