After three good performances had all ended in narrow defeats, Wales Under-19's crashed out by 49-0 to a fit and strong South Africa Schools team at Ellis Park, Johannesburg.
Played as a curtain-raiser to the South Africa-Australia Tri-Nations match, it was the home side who rose to the occasion.
Wales were behind at 8-0 when centre Stephen Ireland (Cardiff) was sin-binned for a tackle that also saw South Africa given a penalty try.
South Africa raced away in the second half to score 34 points without reply, though the Welsh pack battled hard to no avail.
Coach Dai Rees said afterwards: "South Africa is a notoriously difficult place to come to and win, but we asked for a tough itineray and that's what we got.
"We now know what a huge challenge we will have in the Junior World Cup next Easter."
Wales Under 20 travel to Newcastle on Friday to face England at Kingston Park. With the likes of Jack Dixon and Ashley Evans returning to the squad, it's arguably the strongest side head coach Byron Hayward has put out in the tournament so far. WRU TV previews the game with Defence Coach Richard Hodges and captain Steffan Hughes.
Wales head coach Warren Gatland gives an exclusive interview to WRU TV after naming his side to face England in the RBS 6 Nations at Twickenham on Sunday. Gatland has recalled British & Irish Lions duo Jonathan Davies and Alun Wyn Jones to his side while Rhys Webb retains his place at scrum half.
Scrum half Rhys Webb and lock Jake Ball both made their first Wales starts in last Friday's win over France at the Millennium Stadium. They talk exclusively to WRU TV's Luke Broadley about their experiences of the day.
Wales Women's Head Coach Rhys Edwards has made three changes to his side to face France at Aberavon on Sunday, where he expects his side to be given a tough time against one of the best teams in the world.