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OJ

O`brien, Jer

🇮🇪

FIDEFIDE 2535610· Male· Ireland· Born in 2009

Follow Jer O`brienTrack his monthly FIDE ratings, games, tournaments and more.

Jer O`Brien, a 17-year-old Irish player, is rated 1656. He has slipped back 45 Elo over the past 12 months. 10 rated games in the past year. Recent standard appearances include Kinsale Winter Open, Cork Congress 2025 - Majors, and 2025 Glorney Cup. His peak of 1701 was reached at age 16 (Sep 2025).

At junior level, he reached #32 and #30 nationally in U18 and U16.

Current rating

1656

Standard

Rpd—·Blz—

All-time high

1701

−45 pts below
Sep 2025 · age 16

Activity

13

games / yr avg. · ≈1/mo

10 past 12 mo · ≈1/mo
classical only
Moderately active

Signature stat

#125,510

#125,510 · players worldwide · of 216,808

Career timeline

7 entries
2026
32nd Irish U18 player
at age 17 · rated 1679
Jan 2026
2025
30th Irish U16 player
at age 16 · rated 1701
Sep 2025
Crossed 1600
at age 16
Sep 2025
Crossed 1500
at age 16
Sep 2025
Crossed 1400
at age 16
Sep 2025
All-time peak 1701
at age 16 · −45 from today
Sep 2025

Standard rating history

Last 12 months — activity & highlights

Top opponent
vs Keatan Patel 1,990
2025 Glorney Cup · Jul 2025 · +13.6 Elo
Evolution
-45
1701 → 1656
Tournaments
3
16 games
Score
3.5/ 1621.9%
1W7D8L
Top 2 wins
1.[D]vsKeatan Patel1,990·2025 Glorney Cup·R5·+13.6
2.[D]vsIgor Semenov1,957·2025 Glorney Cup·R1·+12.5
Top 3 losses
1.[L]vsAlex O`rourke1,691·Kinsale Winter Open·R2·-18.0
2.[L]vsEthan McGrath1,766·2025 Glorney Cup·R4·-16.3
3.[L]vsZander Booth1,808·2025 Glorney Cup·R3·-14.0

Last 12 months — tournaments

3 events
EventDateScoreRankPerfΔ Elo
Kinsale Winter Open
Open Swiss
Jan 20261.5/2#361841-23.2
Cork Congress 2025 - Majors
Open Swiss
Oct 20251/3#53—-22.0
2025 Glorney Cup
Team
Jul 20251/5#2516430.0
Worst Elo result: Kinsale Winter Open (-23.2 Elo, finished #36).

Rankings

/
Ireland
#690
out of 1,228 players
Europe
#86,439
in continent
World
#125,504
out of 400,000+

National ranking

Europe & World

Europe
World
Ireland
1
🇮🇪Collins, Sam E.Follow Sam E. CollinsTrack their monthly FIDE ratings, games, tournaments and more.
2,459
2
🇮🇪Kanyamarala, TarunFollow Tarun KanyamaralaTrack their monthly FIDE ratings, games, tournaments and more.
2,418
3
🇮🇪O`Gorman, TomFollow Tom O`GormanTrack their monthly FIDE ratings, games, tournaments and more.
2,388
4
🇮🇪Jessel, StephenFollow Stephen JesselTrack their monthly FIDE ratings, games, tournaments and more.
2,357
5
🇮🇪Quinn, MarkFollow Mark QuinnTrack their monthly FIDE ratings, games, tournaments and more.
2,354
6
🇮🇪Baburin, AlexanderFollow Alexander BaburinTrack their monthly FIDE ratings, games, tournaments and more.
2,344
7
🇮🇪Collins, AdamFollow Adam CollinsTrack their monthly FIDE ratings, games, tournaments and more.
2,338
8
🇮🇪Fitzsimons, DavidFollow David FitzsimonsTrack their monthly FIDE ratings, games, tournaments and more.
2,320
9
🇮🇪Venkatesan, KavinFollow Kavin VenkatesanTrack their monthly FIDE ratings, games, tournaments and more.
2,297
10
🇮🇪Heidenfeld, MarkFollow Mark HeidenfeldTrack their monthly FIDE ratings, games, tournaments and more.
2,296
...
690🇮🇪O`brien, Jer1,656
Europe
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,840
2
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,767
3
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,759
3
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,759
5
🇵🇱Duda, Jan-KrzysztofFollow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more.
2,739
6
🇳🇱Van Foreest, JordenFollow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more.
2,735
7
🇭🇺Rapport, RichardFollow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more.
2,729
8
🇫🇷Vachier-Lagrave, MaximeFollow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more.
2,717
8
🇦🇿Mamedyarov, ShakhriyarFollow Shakhriyar MamedyarovTrack their monthly FIDE ratings, games, tournaments and more.
2,717
10
🇹🇷Erdogmus, Yagiz KaanFollow Yagiz Kaan ErdogmusTrack their monthly FIDE ratings, games, tournaments and more.
2,708
...
86439🇮🇪O`brien, Jer1,656
World
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,840
2
🇺🇸Nakamura, HikaruFollow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more.
2,792
3
🇺🇸Caruana, FabianoFollow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more.
2,788
4
🇺🇿Abdusattorov, NodirbekFollow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more.
2,780
5
🇺🇿Sindarov, JavokhirFollow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more.
2,776
6
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,767
7
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,759
7
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,759
9
🇺🇸So, WesleyFollow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more.
2,754
10
🇨🇳Wei, YiFollow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more.
2,753
...
125504🇮🇪O`brien, Jer1,656