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Guatemala's oldest players during the 2003 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 |
|---|---|---|---|
| Alvaro Jiménez | 28:91 | 10318 | 23 Feb 2003v Honduras |
| Gonzalo Romero | 28:89 | 10316 | 22 Jun 2003v Honduras |
| Freddy García | 26:160 | 9657 | 22 Jun 2003v Honduras |
| Denis Chen | 25:197 | 9329 | 23 Feb 2003v Honduras |
| César Alegría | 25:113 | 9245 | 20 Feb 2003v El Salvador |
| Guillermo Ramírez | 25:87 | 9219 | 22 Jun 2003v Honduras |
| Carlos Ruíz | 23:280 | 8681 | 22 Jun 2003v Honduras |
| Dwight Pezzarossi | 23:57 | 8458 | 31 Oct 2002v Jamaica |
| Pablo Melgar | 23:40 | 8441 | 23 Feb 2003v Honduras |
| Ricardo Trigueño | 22:311 | 8347 | 23 Feb 2003v Honduras |
| Carlos Figueroa | 22:309 | 8345 | 23 Feb 2003v Honduras |
| Nestor Martinez | 21:346 | 8017 | 23 Feb 2003v Honduras |
| Claudio Albizuris | 21:236 | 7907 | 23 Feb 2003v Honduras |
| Edwin Gonzalez | 21:212 | 7883 | 22 Jun 2003v Honduras |
| Ricardo Arenas | 21:96 | 7767 | 22 Jun 2003v Honduras |
| Fredy Thompson | 21:19 | 7690 | 22 Jun 2003v Honduras |
| Mario Rodriguez | 20:281 | 7586 | 22 Jun 2003v Honduras |