We're into the final week of the World Cup group stage with 16 teams set for elimination.
The 12 teams finishing bottom will be sent packing, as will the four worst third-placed teams.
Group A will be the third group's fate decided, with games kicking off at 02:00 BST on Thursday 25th June.
With results between teams now the primary separator for teams level on points rather than goal difference, Mexico are guaranteed to finish top of Group A having beaten South Korea last time out.
It creates an interesting dynamic within the group. South Korea, currently second on three points, can't top the group, and would finish runners-up with a draw, but would find themselves eliminated if they lose to South Africa and Czechia beat what may be a weakened Mexico side.
Should South Korea lose to South Africa, they'd still have a chance of going through as a third-place team assuming Czechia don't beat Mexico.
For Czechia, only a win will do as they travel to the Azteca to face Mexico. Czechia, whose goal difference is one better than South Africa, would almost certainly go through with a win. If they win and South Korea lose to South Africa, they'll go through as runners-up as long as they win by the same margin as South Africa.
For South Africa, the equation is the same: a win sends them through to the knockout rounds. A win would guarantee they finish above South Korea on head-to-head, while they'd be at least level on points with Czechia.
Should South Africa and Czechia win, second place will be decided by goal difference, then goals scored, with South Africa trailing by one on both counts.
Group A table
Team | Pld | GD | GF | Pts |
Mexico (W) | 2 | +3 | 3 | 6 |
South Korea | 2 | 0 | 2 | 3 |
Czechia | 2 | -1 | 2 | 1 |
South Africa | 2 | -2 | 1 | 1 |
