The difference is in the next round
If you arrive at a social event and see the same kind of running score on every court, the current round may not reveal the format. The useful question is what determines the next partner and opponent.
PlayAmericano describes rotating partners through a planned programme. Padelturn's Mexicano implementation instead creates later rounds from current standings. Those first-party descriptions establish the examples here; they do not mean every organiser uses identical rules.
| Decision | Americano example | Mexicano example |
|---|---|---|
| Later pairings | Planned rotation | Recalculated from standings |
| Score within a round | Agreed running-point total | Agreed running-point total |
| Personal score | Points earned across rounds | Points earned across rounds |
| Check before play | Rotation and byes | Ranking, pairing method and byes |

