Arielle McKoy

JAM · 19 yrs · K=20 · Peak 1557 (Mar 2024)

Best performance: 1660 at National Self Serv Wholesale Clarendon Open 2024 - OPEN(Best of 2024)

NOV26 Rating

1457

Live Rating

1457.0

Change

0.0

Games Played

How live ratings are calculated

Rating History · Classical

Loading chart…

Official classical rating by month

List	Rating	Change
Nov 2026	1457	0
Oct 2026	1457	0
Sep 2026	1457	0
Aug 2026	1457	0
Jul 2026	1457	0
Jun 2026	1457	0
May 2026	1457	0
Apr 2026	1457	0
Mar 2026	1457	-1
Feb 2026	1458	+1
Jan 2026	1457	0
Dec 2025	1457	0

Form · Classical

oldest → latest

From 226 classical games on record, the latest on Mar 16, 2025.

Classical games since the November list

No rated standard games this rating periodsince the NOV26 list (Nov 1, 2026)

	Last played	Score	TPR
	2025 National Age Group Championship U18 FemaleMar 15, 2025 – Mar 16, 2025TPR 1538	3½/5	1538

The live rating moves only when new rated games are played. Until then it matches the published rating.

Best wins · Classical

From 145 rated classical games against rated opponents, 2017–2025

#	Opponent	Rating
1,	WCM Gabriella Watson, Mar 2025 · 2025 National Age Group Championship U18 Female	, 1695
2,	Samuel Smith, Nov 2024 · National Self Serv Wholesale Clarendon Open 2024 - OPEN	, 1632
3,	Troy McKoy, Oct 2024 · Harold Chan Open 2024 - U2400	, 1580
4,	Orion Isaacs, Jan 2023 · IA FM John Powell Memorial Open 2023 FIDE Open Section	, 1556
5,	Danielle Yankana, Feb 2025 · National Girls Championship 2025	, 1549
6,	Michael Baker, Nov 2024 · National Self Serv Wholesale Clarendon Open 2024 - OPEN	, 1541
7,	Armani Dyer, Jun 2024 · Robert Wheeler Open 2024 - Open Section	, 1493
8,	Winndell Dupres, Apr 2023 · Caribbean Easter Classic 2023	, 1490
9,	Liam Logan, Oct 2024 · Harold Chan Open 2024 - U2400	, 1463
9,	WCM Nickaylah Curwin, Apr 2023 · National Championship (Female) 2023	, 1463

#	Opponent	Overall	Rating
1,	FM Jaden Shaw, Highest-rated meeting: Mar 2024 · National High School Chess Championship 2023-2024 - FINALS	, 0/1	, 2091
2,	WFM Nikolina Koljevic, Highest-rated meeting: Sep 2024 · 45th Chess Olympiad Budapest 2024 Women	, 0/1	, 2030
3,	WIM Alaina Vincent, Highest-rated meeting: Sep 2024 · 45th Chess Olympiad Budapest 2024 Women	, 0/1	, 1976
4,	Kevron Campbell, Highest-rated meeting: Nov 2024 · National Self Serv Wholesale Clarendon Open 2024 - OPEN	, 0/1	, 1908
5,	Nadine Kremer, Highest-rated meeting: Sep 2024 · 45th Chess Olympiad Budapest 2024 Women	, 0/1	, 1898
6,	Nathan Belinfante, Highest-rated meeting: Nov 2024 · National Self Serv Wholesale Clarendon Open 2024 - OPEN	, 0/1	, 1838
7,	FM Kamil Warchol, Highest-rated meeting: Nov 2019 · 4th Adam Gyorgy Memorial 2019	, 0/1	, 1828
8,	WFM Raehanna Brown, Highest-rated meeting: Jan 2023 · National Junior Championship (Female) 2023	, 0/4	, 1809
9,	CM Jhustice-Dimonte McDonald, Highest-rated meeting: Oct 2023 · The Jamaica International Open 2023 - FIDE OPEN Section	, 0/1	, 1796
10,	Ronak Shergil, Highest-rated meeting: Dec 2024 · Frederick Cameron Open 2024 - FIDE OPEN Section	, 0/1	, 1791

Openings · Classical

From the moves of 10 of 226 classical games on record.

As WhiteOpens 1.e4 in 5 of 5 games.

As BlackMeets 1.e4 with 1...e5.

All openings (1 as White)

Openings in White games	Games	Score
Sicilian Defense	3	83%

2 more games in openings played fewer than 3 times.

Event timeline · Classical

38 events

Events before the current rating period show the performance, not a rating change.

Live events show the rating change; earlier events show the performance rating.

Performance rating by year

Year	Games	Score	Avg opp	TPR
2025	14	6	1536	1486
2024	35	7	1627	1387
2023	32	13	1396	1331
2022	15	5	1408	1283
2020	9	1½	1384	1111
2019	15	2	1423	1101
2018	23	7½	1343	1218
2017	2	0	1248	—

Games count in the month they were played. Each month and year is one performance rating over all of its rated games.

2025 National Age Group Championship U18 Female1538
Mar 2025Swissfederation source
Best of 2025Score 3½/5Opp avg 1538Start 1455
National High School Chess Championship 2024-25 Finals—(2)
Feb 2025Swissfederation source
Score 2/5Opp avg 1507Start 1421
National Girls Championship 20251498
Feb 2025Round robinfederation source
#2 in 2025Score 4/9Opp avg 1541Start 1421
National High School Chess Championship 2024-25 Playoffs—(0)
Feb 2025Swissfederation source
Score 1/2Start 1421
Frederick Cameron Open 2024 - FIDE OPEN Section1185
Dec 2024Swissfederation source
#4 in 2024Score ½/6Opp avg 1586Start 1494
National Self Serv Wholesale Clarendon Open 2024 - OPEN1660
Nov 2024Swissfederation source
Best of 2024Score 2/5Opp avg 1732Start 1451
Harold Chan Open 2024 - U24001536
Oct 2024Swissfederation source
#2 in 2024Score 2½/6Opp avg 1593Start 1417
45th Chess Olympiad Budapest 2024 Women1056
Sep 2024Swisschess-results.com
Score 0/4Opp avg 1856Start 1441
Robert Wheeler Open 2024 - Open Section1369
Jun 2024Swissfederation source
#3 in 2024Score 2/6Opp avg 1609Start 1465
National High School Chess Championship 2023-2024 - FINALS907
Mar 2024Swissfederation source
Score 2/6Opp avg 1707Start 1557
John Powell Open 2024 - FIDE OPEN Section1144
Feb 2024Swissfederation source
#5 in 2024Score 2/6Opp avg 1384Start 1261
Frederick Cameron Open 2023 - FIDE OPEN Section572
Dec 2023Swissfederation source
Score 1/5Opp avg 1372Start 1336
The Jamaica International Open 2023 - FIDE OPEN Section1453
Oct 2023Swissfederation source
Best of 2023Score 4/6Opp avg 1453Start 1314
Caribbean Easter Classic 20231351
Apr 2023Swissfederation source
#4 in 2023Score 2½/6Opp avg 1500Start 1274
National Championship (Female) 20231366
Mar – Apr 2023Round robinfederation source
#2 in 2023Score 4/7Opp avg 1316Start 1274
National High Schools Chess Championships 2022-23 Playoffs—(0)
Jan 2023Teamfederation source
Score 2½/3Start 1202
IA FM John Powell Memorial Open 2023 FIDE Open Section1351
Jan 2023Swissfederation source
#4 in 2023Score 1½/6Opp avg 1500Start 1202
National Junior Championship (Female) 20231361
Jan 2023Swissfederation source
#3 in 2023Score 4/7Opp avg 1311Start 1202
Frederick Cameron Open 2022 FIDE Open Section1406
Dec 2022Swissfederation source
Best of 2022Score 2½/6Opp avg 1463Start 1136
Jamaica International 2022 - FIDE U-1600 Section—(0)
Nov 2022Swissfederation source
Score 3½/5Start 1147
NM Dr Harold Chan 2022 - FIDE U-1600 Section—(2)
Oct 2022Swissfederation source
Score 2½/6Opp avg 1467Start 1147
National Junior Championships (Fem) 20221270
Sep 2022Swissfederation source
#2 in 2022Score 3½/7Opp avg 1327Start 1109
IA CM Robert Wheeler 2022 - FIDE U1600 Section—(1)
Aug 2022Swissfederation source
Score 2½/6Opp avg 1452Start 1114
IA FM John Powell Memorial Open 2020 FIDE U-1600 Section1196
Jan 2020Swissfederation source
Best of 2020Score 3/6Opp avg 1389Start 1139
National Junior Championship (Female) 20201014
Jan 2020Swissfederation source
#2 in 2020Score 2½/7Opp avg 1380Start 1139

Live ratings projected from the NOV26 published list · Not affiliated with FIDE