Format
OW
Obrien, William
🇺🇸FIDE 30947790· Male· United States of America· Born in 1998
Follow William ObrienTrack his monthly FIDE ratings, games, tournaments and more.
William Obrien, a 28-year-old American player, is rated 1877 — his current career high. He plays occasionally (8 games in the last 12 months) and took a 30-month break between Feb 2023 and Sep 2025. Recent appearances: 22nd St Amant Memorial Tournament - 2000 and Over and 2nd Koltanowski Memorial Tournament - 1600-1999. Also played 1 blitz event (including 2026 Spring Splash Blitz - 1800 and Over) recently.
Current rating
1877
Standard
Rpd—·Blz1811
All-time high
1877
at best
Oct 2025 · age 27
Oct 2025 · age 27
Activity
3
games / yr avg.
8 past 12 mo · ≈1/mo
classical only
Occasional
classical only
Occasional
Signature stat
#53,963
#53,963 · players worldwide · of 218,279
Career timeline
7 entries2025
Best 12-month gain (+115 Elo)
1762 → 1877
Oct 2025
All-time peak 1877
at age 27
Oct 2025
Crossed 1800
at age 27
Sep 2025
2023
Re-crossed 1600
at age 25
Feb 2023
Inactive for 30 months
paused at 1603 → returned at 1837
Feb 2023
2022
Crossed 1600
at age 24
Sep 2022
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
FIDE recal.
Activity & highlights
Top opponent
Evolution
+115
1762 → 1877
Tournaments
2
8 games
Score
6/ 875.0%
6W0D2L
Top 3 wins
Top 2 losses
Last 12 months — tournaments
2 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | Sep 2025 | 2/4 | #10 | 2132 | +40.4 |
Swiss | Aug 2025 | 4/4 | #1 | 2540 | +74.8 |
Rankings
/
United States of America
#1,495
out of 5,510 players
Americas
#5,998
in continent
World
#53,962
out of 400,000+
National ranking
Europe & World
Europe
World
United States of America
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| 3 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
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| 5 | 🇺🇸Follow Leinier Dominguez PerezTrack their monthly FIDE ratings, games, tournaments and more. | 2,732 |
| 6 | 🇺🇸Follow Levon AronianTrack their monthly FIDE ratings, games, tournaments and more. | 2,724 |
| 7 | 🇺🇸Follow Awonder LiangTrack their monthly FIDE ratings, games, tournaments and more. | 2,696 |
| 7 | 🇺🇸Follow Samuel SevianTrack their monthly FIDE ratings, games, tournaments and more. | 2,696 |
| 9 | 🇺🇸Follow Jeffery XiongTrack their monthly FIDE ratings, games, tournaments and more. | 2,656 |
| 10 | 🇺🇸Follow Ray RobsonTrack their monthly FIDE ratings, games, tournaments and more. | 2,653 |
| ... | ||
| 1495 | 1,877 | |
Americas
| 1 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 1 | 🇺🇸Follow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 3 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| 4 | 🇺🇸Follow Hans Moke NiemannTrack their monthly FIDE ratings, games, tournaments and more. | 2,742 |
| 5 | 🇺🇸Follow Leinier Dominguez PerezTrack their monthly FIDE ratings, games, tournaments and more. | 2,732 |
| 6 | 🇺🇸Follow Levon AronianTrack their monthly FIDE ratings, games, tournaments and more. | 2,724 |
| 7 | 🇺🇸Follow Awonder LiangTrack their monthly FIDE ratings, games, tournaments and more. | 2,696 |
| 7 | 🇺🇸Follow Samuel SevianTrack their monthly FIDE ratings, games, tournaments and more. | 2,696 |
| 9 | 🇺🇸Follow Jeffery XiongTrack their monthly FIDE ratings, games, tournaments and more. | 2,656 |
| 10 | 🇺🇸Follow Ray RobsonTrack their monthly FIDE ratings, games, tournaments and more. | 2,653 |
| ... | ||
| 5998 | 1,877 | |
World
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,841 |
| 2 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 2 | 🇺🇸Follow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 4 | 🇺🇿Follow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more. | 2,777 |
| 4 | 🇺🇿Follow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,777 |
| 6 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 7 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
| 8 | 🇮🇳Follow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more. | 2,761 |
| 9 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| 9 | 🇨🇳Follow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| ... | ||
| 53962 | 1,877 | |