Josh Adams says Wales face the toughest test of their progress under Steve Tandy when facing South Africa in the Nations Championship.

Josh Adams believes Wales' daunting Nations Championship fixture against South Africa will be the litmus test of their progress under Steve Tandy. The Welsh squad have travelled to Durban for their final game of the 2025-26 season after a 35-21 defeat by Argentina in San Juan. Wales took on the Pumas after wins against Italy in the Six Nations and Fiji in the Nations Championship opener, either side of a success against the Barbarians in an uncapped fixture. They were given a reality check by Argentina and now face the toughest challenge of all when going up against the world champions at Kings Park on Saturday (16:40 BST). "There's probably no harder test," said wing Adams. "It's certainly something that will test this group and it'll probably answer a lot of questions about where we are. "How can we react from the Argentina game? The physicality, contact area, movement is all magnified against a team like South Africa so we have to be at the races. "We can talk about lots of areas of the game, but we've got to move quickly, hit hard and stay in the fight. Those are the simple things we need to work on this week." Wales showed spirit to stay in the contest against Argentina and were hunting a pair of bonus points with the clock in the red.