Group A looks more like a structure of “seeded team plus three pursuers”: Mexico are seeded, ranked 14th in the FIFA standings and positioned best, but South Korea (23rd), the Czech Republic (39th), and South Africa (55th) all have room to cause trouble—this group is not one-sided.
Mexico are the seeded side. In their last five matches, they drew 1-1 with Belgium and 0-0 with Portugal, and they also beat Iceland 4-0. Their form is not bad, though there have been some fluctuations. South Korea are ranked 23rd; in their last five matches they lost to Austria 0-1 and to Côte d’Ivoire 0-4, then followed up with consecutive wins over Ghana, Bolivia, and Paraguay—the most obvious ups and downs among the teams.
The Czech Republic are ranked 39th. In their last five matches they drew 1-1 with Denmark and 2-2 with Ireland, but they also beat Gibraltar 6-0; overall they look fairly steady and on an upward trend. South Africa are ranked 55th; in their last five matches they only won in a 3-2 victory over Zimbabwe. The rest were mostly draws and losses, making them the easiest target.
In the first round, Mexico vs South Africa and South Korea vs the Czech Republic are both worth watching. On June 19, Mexico face South Korea; on June 25, South Africa play South Korea and the Czech Republic play Mexico—these will directly shape the group’s overall picture. The real variable is whether South Korea can carry their recent rebound into the big-match duels.