National Self Serve Wholesale Clarendon Chess Open 2025 U1500
Open SwissStandard
14 players participated in this 6-round tournament, held from 15 Nov 2025 to 16 Nov 2025 in Kingston, Jamaica. Top 10 Elo average was 0, and top seed was Joelston Allen (🇯🇲 JAM, 1498).
Simon T Lamm (🇯🇲 JAM, 0) won with 6.0/6, ahead of Antasia Murdock (5.0) and Jayden Hylton (4.5). Lamm won solo starting round 5.
Location
🇯🇲Kingston, Jamaica
Dates
15 Nov 2025 → 16 Nov 2025
Time control
Standard: 40 minutes for the game with 30 seconds increment from move 1
System
Swiss · 6 rounds
Avg top 10
0
Participants
14
Federations · 1 represented
🇯🇲Jamaica×4
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsSimon T Lamm led from R5; +1.0-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.
Co-leaders
14
8
4
2
1
1
R5–R6 · LEAD HELD
Simon T Lamm never relinquished the lead after R5; final gap +1.0 over the runner-up.
R5 · HEAD-TO-HEAD · WINNER VS 2ND
Simon T Lamm beat Antasia Murdock (Black).
WIN STREAKS · 3 top finishers
Simon T Lamm 6 wins (R1–R6)Antasia Murdock 4 wins (R1–R4)Jayden Hylton 4 wins (R2–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Simon T Lamm | * | 1 | 1 | — |
| 2Antasia Murdock | 0 | * | — | — |
| 3Jayden Hylton | 0 | — | * | — |
| 4FIDE 7414722 | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Lamm, Simon T | 0 | JAM | +3B | +?B | +?N | +?B | +2N | +?N | 6.0 | 9.5 | 9.5 | 9.50 | 1527 | 0.0 |
| 2 | Murdock, Antasia | 0 | JAM | +?B | +?N | +?B | +?N | −1B | +?B | 5.0 | 6.0 | 6.0 | 0.00 | 1516 | 0.0 |
| 3 | Hylton, Jayden | 0 | JAM | −1N | +14B | +4N | +?B | +?N | =?B | 4.5 | 10.0 | 10.0 | 4.00 | 1468 | 0.0 |
| 4 | FIDE 7406649 | 0 | — | +?B | −?N | −3B | +9N | +?B | +11N | 4.0 | 9.5 | 9.5 | 5.00 | 652 | 0.0 |
| 5 | FIDE 7414722 | 0 | — | −?N | +?N | +?B | +?B | −?N | +?B | 4.0 | 0.0 | 0.0 | 0.00 | 700 | 0.0 |
| 6 | FIDE 7408544 | 0 | — | =?N | +?B | −?N | +?B | −?N | +7B | 3.5 | 3.0 | 3.0 | 3.00 | 700 | 0.0 |
| 7 | FIDE 7410581 | 0 | — | +?B | +10N | −?B | +?N | −?B | −6N | 3.0 | 6.5 | 6.5 | 3.00 | 652 | 0.0 |
| 8 | FIDE 7418213 | 0 | — | −12B | +13N | +?B | +11N | −?B | −?N | 3.0 | 5.5 | 5.5 | 3.50 | 652 | 0.0 |
| 9 | FIDE 7410956 | 0 | — | −?N | +?B | −?N | −4B | +?N | +?B | 3.0 | 4.0 | 4.0 | 0.00 | 700 | 0.0 |
| 10 | Wilson, Cordelia | 0 | JAM | F | −7B | −?N | +?B | +?N | +?B | 3.0 | 3.0 | 3.0 | 0.00 | 1468 | 0.0 |
| 11 | FIDE 7416903 | 0 | — | F | −?B | +?N | −8B | +?N | −4B | 2.0 | 7.0 | 7.0 | 0.00 | 648 | 0.0 |
| 12 | FIDE 7411421 | 0 | — | +8N | +?B | −?N | −?B | −?N | −?B | 2.0 | 3.0 | 3.0 | 3.00 | 674 | 0.0 |
| 13 | FIDE 7418205 | 0 | — | −?N | −8B | =?N | −?N | F | +?B | 1.5 | 3.0 | 3.0 | 0.00 | 648 | 0.0 |
| 14 | FIDE 7418191 | 0 | — | −?B | −3N | F | F | F | F | 0.0 | 4.5 | 4.5 | 0.00 | 652 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1FIDE 74085440.03.5 pts · #9
- 2Lamm, Simon TJAM0.06.0 pts · #1
- 3FIDE 74066490.04.0 pts · #12
Top rating losers
- 1FIDE 74085440.03.5 pts · #9
- 2Lamm, Simon TJAM0.06.0 pts · #1
- 3FIDE 74066490.04.0 pts · #12