XIV Torneo Internacional y Nacional Abierto de Ajedrez de la Ciudad de Mexico. Sub 9
Open SwissStandard
17 players participated in this 7-round tournament, held from 13 Sept 2025 to 16 Sept 2025 in CDM, Ciudad de Mexico, Mexico. Top 10 Elo average was 320, and top seed was David Alfredo Sahagun Diaz (🇲🇽 MEX, 1626).
David Alfredo Sahagun Diaz (🇲🇽 MEX, 1626) won with 6.5/7, ahead of Rodrigo Martinez Franco (5.0) and Alia Quetzalli Godinez Mejia (5.0). Sahagun Diaz won solo starting round 4.
Location
🇲🇽CDM, Ciudad de Mexico, Mexico
Dates
13 Sept 2025 → 16 Sept 2025
Time control
Standard: 65 minutes for game
System
Swiss · 7 rounds
Federations · 1 represented
🇲🇽Mexico×11
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsDavid Alfredo Sahagun Diaz led from R4; +1.5-point edge over the runner-up.
Co-leaders
13
5
2
1
1
1
1
R4–R7 · LEAD HELD
David Alfredo Sahagun Diaz never relinquished the lead after R4; final gap +1.5 over the runner-up.
R1–R6 · WIN STREAK
David Alfredo Sahagun Diaz won 6 in a row (R1–R6).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1David Alfredo Sahagun Diaz | * | — | — | 1 |
| 2Alia Quetzalli Godinez Mejia | — | * | ½ | 0 |
| 3FIDE 29635497 | — | ½ | * | 1 |
| 4Rodrigo Martinez Franco | 0 | 1 | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Sahagun Diaz, David Alfredo | 1626 | MEX | +14N | +10B | +11N | +2N | +9B | +7B | =5N | 6.5 | 25.5 | 28.5 | 26.25 | 2377 | +17.2 |
| 2 | Martinez Franco, Rodrigo | 0 | MEX | +?B | +6N | +5N | −1B | +12N | +3B | −4N | 5.0 | 29.5 | 29.5 | 18.00 | 826 | 0.0 |
| 3 | Godinez Mejia, Alia Quetzalli | 0 | MEX | +?N | =4B | +10N | =7B | +5N | −2N | +8B | 5.0 | 26.5 | 26.5 | 17.00 | 1577 | 0.0 |
| 4 | FIDE 29635497 | 0 | — | +12B | =3N | −?B | +?N | =8B | +15N | +2B | 5.0 | 21.0 | 21.0 | 16.50 | 776 | 0.0 |
| 5 | Santoyo Roman, Luis Alberto | 0 | MEX | +15B | +?N | −2B | +8N | −3B | +11N | =1B | 4.5 | 27.5 | 27.5 | 14.25 | 1626 | 0.0 |
| 6 | Rodriguez Perez, Dominick Zadquiel | 0 | MEX | +?N | −2B | +14N | +?B | −7N | +9N | =?B | 4.5 | 16.0 | 16.0 | 7.00 | 777 | 0.0 |
| 7 | Salazar Amaro, Pedro Miguel | 1577 | MEX | F | +9N | =8B | =3N | +6B | −1N | +13B | 4.0 | 28.0 | 28.0 | 17.00 | 826 | -17.2 |
| 8 | Juarez Gordillo, Sergio Andrei | 0 | MEX | +13N | +?B | =7N | −5B | =4N | +12B | −3N | 4.0 | 26.5 | 26.5 | 12.50 | 1577 | 0.0 |
| 9 | Zapata Robles, Gael | 0 | MEX | +?N | −7B | +13N | +11B | −1N | −6B | +16N | 4.0 | 26.0 | 26.0 | 11.00 | 802 | 0.0 |
| 10 | FIDE 29623197 | 0 | — | +16B | −1N | −3B | +17N | −11B | +?B | +14N | 4.0 | 23.5 | 23.5 | 8.00 | 826 | 0.0 |
| 11 | Barrera Vite, Derek | 0 | MEX | +?B | +?N | −1B | −9N | +10N | −5B | +?N | 4.0 | 19.0 | 19.0 | 4.00 | 1601 | 0.0 |
| 12 | Castillo Gonzalez, Michelle | 0 | MEX | −4N | +?B | +?B | +?N | −2B | −8N | +?B | 4.0 | 14.0 | 14.0 | 0.00 | 1596 | 0.0 |
| 13 | Angeles Quiroz, Iker Santiago | 0 | MEX | −8B | +?N | −9B | +?N | +?N | +?B | −7N | 4.0 | 12.0 | 12.0 | 0.00 | 1577 | 0.0 |
| 14 | FIDE 29676703 | 0 | — | −1B | −?N | −6B | +?N | +17B | +?N | −10B | 3.0 | 17.0 | 17.0 | 2.00 | 826 | 0.0 |
| 15 | FIDE 29684030 | 0 | — | −5N | +17B | +?N | =16B | =?N | −4B | −?N | 3.0 | 14.5 | 14.5 | 3.50 | 776 | 0.0 |
| 16 | FIDE 550011960 | 0 | — | −10N | +?B | =?B | =15N | −?B | +?N | −9B | 3.0 | 11.0 | 11.0 | 1.50 | 776 | 0.0 |
| 17 | FIDE 29627001 | 0 | — | −?B | −15N | +?B | −10B | −14N | F | +?N | 2.0 | 10.0 | 10.0 | 0.00 | 776 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Sahagun Diaz, David AlfredoMEX+17.26.5 pts · #4
- 2FIDE 296270010.02.0 pts · #12
- 3FIDE 296231970.04.0 pts · #15
Top rating losers
- 1Salazar Amaro, Pedro MiguelMEX-17.24.0 pts · #10
- 2FIDE 296270010.02.0 pts · #12
- 3FIDE 296231970.04.0 pts · #15