Rob Page's side have suffered back-to-back defeats, against Turkey and Armenia, and had a player sent off in each game, so will be looking to make amends - and keep 11 men on the pitch - before their Euro 2024 qualifiers resume.
South Korea are still looking for their first win under manager Jurgen Klinsmann in their fourth game and hope to keep their first clean sheet in nine.
Ben Davies will have the unenviable task of keeping Tottenham team-mate Heung-min Son quiet for the evening, while new Spurs signing Brennan Johnson will look to continue his fleeting international career at the other end of the pitch.
Where to watch Wales vs South Korea
TV channel: In the UK, the game will be televised live on S4C for free.
Live stream: UK viewers can use BBC iPlayer to view the game, along with S4C’s online service. The match will also be available on Sgorio’s YouTube and Facebook channels.