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Paraguay's oldest players during the 1989 season, and their age in years and days on the occasion of their final appearance, starting or coming on as a substitute.
For each player age is given in days, and in years and days, from their date of birth.
| Player | Age (Y:d) | Age (days) | Match |
|---|---|---|---|
| Roberto Fernandez | 34:320 | 12739 | 25 May 1989v Bolivia |
| Rogelio Delgado | 29:233 | 10826 | 02 Jun 1989v Bolivia |
| Buenaventura Ferreira | 28:333 | 10560 | 02 Jun 1989v Bolivia |
| Jorge Guash | 28:72 | 10299 | 30 Mar 1989v Venezuela |
| Justo Pastor Jacquet | 27:258 | 10120 | 25 May 1989v Bolivia |
| Catalino Rivarola | 24:33 | 8799 | 02 Jun 1989v Bolivia |
| Carlos Alberto Guirland | 20:255 | 7560 | 30 Mar 1989v Venezuela |
| Aristides Fabian Rojas | 17:182 | 6392 | 25 May 1989v Bolivia |