| Club | League | Years |
|---|---|---|
| Mallorca | La Liga | 2007–2011 |
| Elche | La Liga | 2009–2010 |
| Rayo Vallecano | La Liga | 2010–2011, 2017–2026 |
| Sporting Gijón | La Liga | 2011–2013 |
| Toulouse | Ligue 1 | 2013–2017 |
Only the clubs in the game are in the data; spells at other clubs, loans and youth years may be missing.
Which club pairs is Óscar Trejo an answer for?
In Who Played Both, if two of these clubs meet, Óscar Trejo is one of the right answers.
- Elche – Rayo Vallecano 43 players
- Elche – Mallorca 38 players
- Mallorca – Rayo Vallecano 33 players
- Rayo Vallecano – Sporting Gijón 32 players
- Mallorca – Sporting Gijón 28 players
- Elche – Sporting Gijón 24 players
- Rayo Vallecano – Toulouse 4 players
- Sporting Gijón – Toulouse 4 players
Source: Wikidata (CC0), Wikipedia club articles and player infoboxes (years at each club). Youth spells and appearances that look unplayed are left out; volunteer-kept records can contain gaps or errors.