Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. E B Oviedo Castillo vs P de Leon |
| 0-1 | 35 | 2008 | Dresden Olympiad (Women) | D37 Queen's Gambit Declined |
2. P de Leon vs S Ulms |
| 0-1 | 40 | 2008 | Dresden Olympiad (Women) | E81 King's Indian, Samisch |
3. P de Leon vs A Rysbayeva |
| 0-1 | 37 | 2008 | Dresden Olympiad (Women) | D15 Queen's Gambit Declined Slav |
4. A Shabanaj vs P de Leon |
| 1-0 | 36 | 2008 | Dresden Olympiad (Women) | D57 Queen's Gambit Declined, Lasker Defense |
5. P de Leon vs N Arosemena |
| 1-0 | 31 | 2008 | Dresden Olympiad (Women) | E82 King's Indian, Samisch, double Fianchetto Variation |
6. P de Leon vs A K Jennitha |
 | ½-½ | 57 | 2008 | Dresden Olympiad (Women) | A50 Queen's Pawn Game |
7. I Erneste vs P de Leon |
 | 1-0 | 13 | 2008 | Dresden Olympiad (Women) | C01 French, Exchange |
8. P Walta vs P de Leon |
| 1-0 | 48 | 2008 | Dresden Olympiad (Women) | C55 Two Knights Defense |
9. P de Leon vs H Thorsteinsdottir |
| 0-1 | 29 | 2008 | Dresden Olympiad (Women) | D91 Grunfeld, 5.Bg5 |
10. M F Fernandez vs P de Leon |
| ½-½ | 47 | 2009 | World Junior Championship (Girls) | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
11. P de Leon vs H Bryla |
| 0-1 | 43 | 2009 | World Junior Championship (Girls) | A53 Old Indian |
12. M Congiu vs P de Leon |
 | 1-0 | 23 | 2009 | World Junior Championship (Girls) | C01 French, Exchange |
13. P de Leon vs N Bucar |
 | 1-0 | 14 | 2009 | World Junior Championship (Girls) | D70 Neo-Grunfeld Defense |
14. M A Martinez de Negri vs P de Leon |
| 1-0 | 40 | 2009 | World Junior Championship (Girls) | D02 Queen's Pawn Game |
15. P de Leon vs S Anton |
| 0-1 | 47 | 2009 | World Junior Championship (Girls) | A87 Dutch, Leningrad, Main Variation |
16. V Heinrichs vs P de Leon |
| 0-1 | 56 | 2009 | World Junior Championship (Girls) | C17 French, Winawer, Advance |
17. P de Leon vs A Hattingh |
| ½-½ | 19 | 2009 | World Junior Championship (Girls) | D20 Queen's Gambit Accepted |
18. J Martinez vs P de Leon |
| 0-1 | 44 | 2009 | World Junior Championship (Girls) | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
19. P de Leon vs A Srebrnic |
| 0-1 | 56 | 2012 | Istanbul Olympiad (Women) | A41 Queen's Pawn Game (with ...d6) |
20. L Smith vs P de Leon |
| 0-1 | 38 | 2012 | Istanbul Olympiad (Women) | A03 Bird's Opening |
21. S Barth Stanford vs P de Leon |
| 1-0 | 41 | 2012 | Istanbul Olympiad (Women) | C05 French, Tarrasch |
22. P de Leon vs T Hoang |
| 0-1 | 53 | 2014 | Tromso Olympiad (Women) | E17 Queen's Indian |
23. Onkemetse Francis vs P de Leon |
| 0-1 | 25 | 2014 | Tromso Olympiad (Women) | C00 French Defense |
24. P de Leon vs A Marzouk |
| 1-0 | 23 | 2014 | Tromso Olympiad (Women) | A52 Budapest Gambit |
25. B Franciskovic vs P de Leon |
| 1-0 | 30 | 2014 | Tromso Olympiad (Women) | A06 Reti Opening |