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Thailand's oldest players during the 2004 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 |
|---|---|---|---|
| Tawan Sripan | 32:179 | 11867 | 09 Jun 2004v Korea DPR |
| Kiatisuk Senamuang | 30:302 | 11260 | 09 Jun 2004v Korea DPR |
| Therdsak Chaiman | 30:183 | 11141 | 31 Mar 2004v Yemen |
| Sutee Suksomkit | 26:53 | 9550 | 28 Jul 2004v Oman |
| Rangsan Vivatchaichok | 25:187 | 9319 | 28 Jul 2004v Oman |
| Nirut Surasiang | 25:154 | 9286 | 24 Jul 2004v Japan |
| Jetsada Jitsawad | 23:360 | 8761 | 28 Jul 2004v Oman |
| Narongchai Vachiraban | 23:162 | 8563 | 28 Jul 2004v Oman |
| Phaitoon Thiabma | 22:318 | 8354 | 28 Jul 2004v Oman |
| Sarayuth Chaikamdee | 22:307 | 8343 | 28 Jul 2004v Oman |
| Nattaporn Phanrit | 22:194 | 8230 | 24 Jul 2004v Japan |
| Sinthaweechai Hathairattanakool | 22:123 | 8159 | 24 Jul 2004v Japan |
| Phichitpong Choeichiu | 21:334 | 8005 | 28 Jul 2004v Oman |
| Datsakorn Thonglao | 20:211 | 7516 | 28 Jul 2004v Oman |