The Welsh full-back jersey seems in secure hands this summer, with Liam Williams set to retain his spot in Wayne Pivac's squad next week.
However, it might just be a little too secure - with little in the way of competition. Hallam Amos has retired, while Jonah Holmes isn't eligible for Test selection after signing a deal with Ealing Trailfinders.
Leigh Halfpenny won't be touring as he recovers from a bad knee injury, while there's no guarantee Johnny McNicholl - who started in the 15 jersey in the defeat to Italy last time out - will be fit.
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So right now, it could well be Williams and A. N. Others when Pivac names his squad next week. But who will the next cab, or cabs, off the rank be? Significant, because what happens if Williams joins Wales' extensive injury list? Who would fill in at 15 then against the world champions?
These are the men Pivac will be pondering ahead of his squad announcement next week.
Michael Collins (Ospreys)
At 28, Collins is hardly one for the future. But with the World Cup a year out, Pivac likely won't care too much if he feels Collins could do a job.
Capable of playing in midfield and at full-back, the Ospreys man's versatility could be a tempting proposition for the Wales coach. Perhaps lacking in top-end pace for Test rugby, he counters that with a multi-faceted game and a true rugby intelligence.
His eye for a line is a useful trait either in midfield or at full-back, with his braces of tries against the Dragons at the start of the season the perfect example of this.
In the reverse fixture on the weekend, he showed his ability to cut through the line, stepping inside Josh Lewis to put Reuben Morgan Williams over for a try.
Only the week before, he'd shown his vision on transition ball, picking out Keelan Giles with a long, looping pass after the Ospreys had turned over the Scarlets. He'd be on hand to support Giles and receive the scoring pass from the wing moment later.
But that vision to spot an attacking opportunity is something Wales have lacked on turnover ball under Pivac so far. Given how crucial that was for Pivac at the Scarlets, it wouldn't hurt to have more players who can take advantage of the opportunities present immediately after possession changes hands.
Ioan Lloyd (Bristol Bears)
When Lloyd made his Wales debut back in the autumn of 2020, the expectation was that many more caps would follow shortly after. That hasn't been the case, which isn't necessarily a bad thing as the versatile Lloyd tries to figure out which position is best for him.
Capable of playing fly-half, centre, wing or full-back, it was the latter where Lloyd won his two Welsh caps against Georgia and Italy - albeit off the bench. Those matches showed some promise - with most full-backs likely to have been proud of claiming any sort of high ball in Llanelli's horizontal rain.
However, there were a few defensive issues which needed to be ironed out. Against Italy in his second cap, he was bumped off all too easily by Johan Meyer as the openside romped over for a try.
"One of the areas that he's really improved is defence," said Bristol Bears coach Pat Lam earlier this year. "That's what Wayne asked for when he came back. Omar Mouneimne has done a great job on his tackle technique."
However, as part of his development under Lam, the sense is that his future lies around the 10-12 axis. Saying that, most of his appearances this season have been in the back-three - with a fair few at 15.
His future still seems a little undecided in terms of a position then, but Pivac could certainly fancy bringing him to South Africa for another close look.
Tom Rogers (Scarlets)
This time last year, Rogers was making a case for Test selection with a string of fine performances in a breakout season for the Scarlets. His efforts were rewarded, although stepping up to international rugby on the wing proved tricky.
Since then, he's not been near a Welsh squad, but his performances under Dwayne Peel have remained promising. What's more, it is his potential at full-back that has proven a real boost for Welsh rugby.
While Ryan Conbeer has become the standout wing at Parc y Scarlets, Rogers has looked like the man capable of filling Liam Williams' boots in Llanelli when he departs for Cardiff next year. Out in South Africa, he showed his aerial prowess under the high ball with aplomb.
His link work was to the fore in the early stages of that matches, while his footwork is there for all to see.
He's currently nursing an ankle injury, but if he can recover from that, there's a chance Pivac would consider him. If not now, then certainly in years to come.
Mat Protheroe (Ospreys)
Perhaps the most exciting option, Protheroe is a fleet-footed player that gets people off their seats and on their feet.
The Ospreys full-back, also capable of playing fly-half and wing, has yet to get a call-up from Wales, despite being tipped on more than one occasion. Despite that, he's been one of the region's most devastating and dangerous runners.
Quite simply, you cannot kick loose to Protheroe. If so, he'll almost always beat the first tackler. His elusive running style could be just what Wales need on the hard grounds of South Africa - with former Springbok fly-half Joel Stransky saying last week Wales would need something special in their backline.
"If you want to beat the Boks, you can't play a standard game," he said. "You have to battle hard, compete in the breakdown and set-piece and stand your ground. But you've got to have something special in the backs. I don't think the Lions had that last year. I don't think they made it their game to be a little special.
"I think they tried to win by beating the Boks at their own game and I don't think there's a team that can do that."
The other plus point with Protheroe is his ability to step in at first-receiver. It's an option Pivac likes in his back-three, with McNicholl and Halfpenny having done it before now. As Stransky says, Wales will "need a 10 who has great vision, can do something extraordinary" who also "doesn't make mistakes as the Boks are excellent on capitalising on errors".
Maybe you get around that by having them be the second playmaking option at full-back - dovetailing with the starting fly-half.
However, if the upside is understandably exciting, the downside is equally concerning. Against the Scarlets, Ryan Conbeer managed to bump off two poor tackle attempts from Protheroe - one of which resulted in a try.
Iron those kinks out and a player of his talent should be in contention. Just maybe that could be this summer.
