Campeonato Internacional Abierto de Ajedrez Tijuana 2025 Sub 2000
16 players participated in this 7-round tournament, held from 27 Sept 2025 to 29 Sept 2025 in B C, Tijuana, Mexico. Top 10 Elo average was 1757, and top seed was Alejandro Segovia Sarmiento (🇲🇽 MEX, 1892).
Aaron Sanchez Nunez (🇲🇽 MEX, 1775) won with 5.0/7, ahead of Bhrayaan Or Robles Vivanco (5.0) and Alejandro Cecena Oropeza (4.0). Sanchez Nunez shared the lead from round 4, winning on tie-break.
The biggest upset came in round 1: Jose Luis Gerardo Avendano (1566) beat Bhrayaan Or Robles Vivanco (1744), a +178-point gap.
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How it unfolded
Top 6 · 7 roundsTight race until R6; 2 players tied at 5.0/7, decided on Buchholz. Title race narrowed from 4 co-leaders at R4 to 2 at the finish.
Aaron Sanchez Nunez takes the sole lead (4.5/6).
2 players finish on 5.0/7. Sanchez Nunez takes the title on Buchholz Cut1 (23.5).
Aaron Sanchez Nunez beat Bhrayaan Or Robles Vivanco (White).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Aaron Sanchez Nunez | * | 1 | ½ | — |
| 2Bhrayaan Or Robles Vivanco | 0 | * | — | 0 |
| 3Alex Jampier Silvestre | ½ | — | * | — |
| 4Jose Luis Gerardo Avendano | — | 1 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Sanchez Nunez, Aaron | 1775 | MEX | =12N | +2B | =9N | +3B | =4B | +7N | =6B | 5.0 | 23.5 | 25.5 | 19.00 | 2009 | +74.8 |
| 2 | Robles Vivanco, Bhrayaan Or | 1744 | MEX | −5B | −1N | +14N | +15B | +8N | +3B | +7B | 5.0 | 21.0 | 22.0 | 13.00 | 1805 | +17.6 |
| 3 | Cecena Oropeza, Alejandro | 1799 | MEX | +11B | +4N | +10B | −1N | =7B | −2N | =9B | 4.0 | 23.5 | 26.5 | 13.25 | 1781 | -4.4 |
| 4 | Rodriguez Rincon, Marcos | 1773 | MEX | F | −3B | +12N | +8B | =1N | =6B | +11N | 4.0 | 21.5 | 21.5 | 13.00 | 1803 | -3.6 |
| 5 | Gerardo Avendano, Jose Luis | 1566 | MEX | +2N | =9B | −16N | −10N | +13B | =8B | +15N | 4.0 | 17.5 | 18.5 | 11.25 | 1779 | +56.4 |
| 6 | Jampier Silvestre, Alex | 0 | MEX | F | F | +11N | +16B | +10B | =4N | =1N | 4.0 | 16.0 | 16.0 | 11.50 | 1968 | +12.2 |
| 7 | Segovia Sarmiento, Alejandro | 1892 | MEX | −8N | +12B | +15N | +9B | =3N | −1B | −2N | 3.5 | 22.5 | 23.5 | 8.00 | 1750 | -37.2 |
| 8 | Gerardo Cisneros, Ariel Ulises | 0 | MEX | +7B | −10N | +13B | −4N | −2B | =5N | +14N | 3.5 | 21.5 | 22.5 | 8.50 | 1666 | 0.0 |
| 9 | Martinez Villalobos, Felipe De Je | 0 | MEX | +13B | =5N | =1B | −7N | =12B | F | =3N | 3.0 | 20.5 | 21.5 | 9.50 | 1744 | 0.0 |
| 10 | Siqueiros Jaramillo, Daniel Josue | 1681 | MEX | +14N | +8B | −3N | +5B | −6N | −11B | −13N | 3.0 | 20.5 | 21.5 | 8.50 | 1519 | -33.6 |
| 11 | Rivera Lopez, Jeshua Omar | 0 | MEX | −3N | F | −6B | +14B | +16N | +10N | −4B | 3.0 | 17.0 | 17.0 | 5.00 | 1722 | 0.0 |
| 12 | Castillo Martinez, Angel Said | 1800 | MEX | =1B | −7N | −4B | +13N | =9N | F | F | 2.0 | 17.5 | 17.5 | 6.00 | 1693 | -23.6 |
| 13 | Trujillo Guzman, Gema Zophiel | 1640 | MEX | −9N | =14B | −8N | −12B | −5N | =15B | +10B | 2.0 | 16.5 | 17.5 | 4.00 | 1585 | -13.2 |
| 14 | Meza Flores, Luis Salvado | 0 | MEX | −10B | =13N | −2B | −11N | =15N | F | −8B | 1.0 | 17.5 | 17.5 | 1.50 | 1484 | 0.0 |
| 15 | Ham Corona, Manuel Aaron | 1641 | MEX | F | F | −7B | −2N | =14B | =13N | −5B | 1.0 | 15.5 | 15.5 | 1.50 | 1388 | -46.0 |
| 16 | Robles Sanchez, Fausto | 1829 | MEX | F | F | +5B | −6N | −11B | F | F | 1.0 | 14.0 | 14.0 | 4.00 | 1706 | -5.8 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Sanchez Nunez, AaronMEX+74.85.0 pts · #1
- 2Gerardo Avendano, Jose LuisMEX+56.44.0 pts · #5
- 3Robles Vivanco, Bhrayaan OrMEX+17.65.0 pts · #4
- 1Ham Corona, Manuel AaronMEX-46.01.0 pts · #16
- 2Segovia Sarmiento, AlejandroMEX-37.23.5 pts · #8
- 3Siqueiros Jaramillo, Daniel JosueMEX-33.63.0 pts · #13
- R1+178 Elo gap
- R7+148 Elo gap
- R6+117 Elo gap