Club de Ajedrez La Costa - 4to de Final 2025
Open SwissStandard
21 players participated in this 5-round tournament, held from 09 Dec 2025 to 23 Dec 2025 in Ciudad de la Costa, Uruguay. Top 10 Elo average was 1808, and top seed was Mateo Varela (🇺🇾 URU, 1951).
Sergio Martinez Tagliafico (🇺🇾 URU, 1864) won with 5.0/5, ahead of Carolin Werle (3.5) and Diego Roselli (3.5). Martinez Tagliafico won solo starting round 2.
The biggest upset came in round 1: Carolin Werle (1655) beat Ricardo Estevez (1912), a +257-point gap.
Location
🇺🇾Ciudad de la Costa, Uruguay
Dates
09 Dec 2025 → 23 Dec 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Federations · 1 represented
🇺🇾Uruguay×21
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 5 roundsSergio Martinez Tagliafico led from R2; +1.5-point edge over the runner-up.
Co-leaders
9
1
1
1
1
R2–R5 · LEAD HELD
Sergio Martinez Tagliafico never relinquished the lead after R2; final gap +1.5 over the runner-up.
R1–R5 · WIN STREAK
Sergio Martinez Tagliafico won 5 in a row (R1–R5).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Sergio Martinez Tagliafico | * | — | — | — |
| 2Diego Roselli | — | * | — | — |
| 3Carolin Werle | — | — | * | 1 |
| 4Ricardo Estevez | — | — | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Martinez Tagliafico, Sergio | 1864 | URU | +9B | +17N | +12B | +7N | +4B | 5.0 | 9.0 | 10.0 | 10.00 | 2516 | +30.6 |
| 2 | Werle, Carolin | 1655 | URU | +5B | =4N | −7B | +14N | +12B | 3.5 | 10.0 | 11.0 | 7.00 | 1915 | +68.8 |
| 3 | Roselli, Diego | 1840 | URU | +15N | F | +9B | =4N | +7B | 3.5 | 8.5 | 8.5 | 7.00 | 2032 | +29.6 |
| 4 | Cano, Carlos | 1735 | URU | +10N | =2B | +13N | =3B | −1N | 3.0 | 14.0 | 15.5 | 7.00 | 1785 | +5.2 |
| 5 | Estevez, Ricardo | 1912 | URU | −2N | +20B | +15N | +16B | F | 3.0 | 8.0 | 8.0 | 2.00 | 1729 | -22.8 |
| 6 | Castagnet, Carlos | 1706 | URU | +19B | =7N | =14B | F | +16N | 3.0 | 5.0 | 5.0 | 3.25 | 1711 | +0.2 |
| 7 | Correa, Julio | 1765 | URU | +20N | =6B | +2N | −1B | −3N | 2.5 | 15.0 | 15.0 | 5.00 | 1718 | -11.6 |
| 8 | Cicero, Carlos | 1766 | URU | F | +18N | +21B | =12N | F | 2.5 | 5.0 | 5.0 | 1.25 | 1880 | +11.2 |
| 9 | Vieira, Emiliano | 1651 | URU | −1N | +10B | −3N | +15B | F | 2.0 | 12.0 | 13.0 | 3.00 | 1654 | -0.4 |
| 10 | Gomez, Enrique | 0 | URU | −4B | −9N | +18B | F | +?N | 2.0 | 6.5 | 6.5 | 0.50 | 1671 | 0.0 |
| 11 | Varela, Mateo | 1951 | URU | F | F | +20N | +13B | F | 2.0 | 3.5 | 3.5 | 1.50 | 2465 | +14.0 |
| 12 | Correa, Mario | 1761 | URU | +16B | F | −1N | =8B | −2N | 1.5 | 12.0 | 12.0 | 2.25 | 1489 | -39.6 |
| 13 | Perez Selios, Luis | 1778 | URU | +18B | =14N | −4B | −11N | F | 1.5 | 8.0 | 8.5 | 1.00 | 1652 | -14.4 |
| 14 | Luzardo, Martin | 1657 | URU | F | =13B | =6N | −2B | F | 1.0 | 10.5 | 12.0 | 2.25 | 1588 | -10.4 |
| 15 | Grela, Matias | 1632 | URU | −3B | +19N | −5B | −9N | F | 1.0 | 9.0 | 9.5 | 0.50 | 1001 | -34.4 |
| 16 | Alonso, Daniel | 0 | URU | −12N | F | +17B | −5N | −6B | 1.0 | 8.5 | 8.5 | 1.00 | 1569 | 0.0 |
| 17 | Uslenghi, Leonel | 1669 | URU | +21N | −1B | −16N | F | F | 1.0 | 8.0 | 8.0 | 0.00 | 1064 | -5.0 |
| 18 | Werle, Julius | 1612 | URU | −13N | −8B | −10N | =19B | F | 0.5 | 7.0 | 7.5 | 0.25 | 973 | -22.8 |
| 19 | Gonzalez, Gaston | 0 | URU | −6N | −15B | F | =18N | F | 0.5 | 4.5 | 4.5 | 0.25 | 1377 | 0.0 |
| 20 | Martinez, Lorenzo | 1524 | URU | −7B | −5N | −11B | F | F | 0.0 | 8.5 | 8.5 | 0.00 | 1067 | -14.8 |
| 21 | Martinez, Bruno | 0 | URU | −17B | F | −8N | −?B | F | 0.0 | 4.0 | 4.0 | 0.00 | 907 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Werle, CarolinURU+68.83.5 pts · #3
- 2Martinez Tagliafico, SergioURU+30.65.0 pts · #1
- 3Roselli, DiegoURU+29.63.5 pts · #2
Top rating losers
- 1Correa, MarioURU-39.61.5 pts · #15
- 2Grela, MatiasURU-34.41.0 pts · #17
- 3Werle, JuliusURU-22.80.5 pts · #21
Biggest upsets
- R1+257 Elo gap
- R5+106 Elo gap