Format
YT
Yamaguchi, Tosei
🇯🇵FIDE 7004737· Male· Japan· Born in 1999
Follow Tosei YamaguchiTrack his monthly FIDE ratings, games, tournaments and more.
Tosei Yamaguchi, a 27-year-old player, is rated 1920. He has held steady between 1900 and 1950 for 2 years. 22 rated games in the past year (≈20/year long-term). Recent appearance: Tokai Open 2026. Also played 2 rapid events (including 2nd Science Tokyo Rapid Chess Tournament) recently. His peak of 1968 was reached at age 25 (Mar 2024); he also reached #29 nationally in Aug 2023.
Current rating
1920
Standard
Rpd1960·Blz—
All-time high
1968
−48 pts below
Mar 2024 · age 25
Mar 2024 · age 25
Activity
19
games / yr avg. · ≈2/mo
14 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#43,243
#43,243 · players worldwide · of 218,279
Career timeline
5 entries2024
K-factor lowered to 20
at age 25
Jun 2024
All-time peak 1968
at age 25 · −48 from today
Mar 2024
2023
Peak national rank: #29
at age 24 · rated 1953
Aug 2023
Crossed 1800
at age 24
Aug 2023
First FIDE rating
1953 · at age 24
Aug 2023
Standard rating history
Peak
FIDE title
Threshold
First rated
FIDE recal.
Activity & highlights
Top opponent
Evolution
0
1920 → 1920
Tournaments
2
14 games
Score
8/ 1457.1%
7W2D5L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
2 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | May 2026 | 4/9 | #28 | 1856 | -19.2 |
Open Swiss | Jan 2026 | 4/5 | #5 | 2086 | +18.8 |
Rankings
/
Japan
#45
out of 254 players
Asia-Pacific
#5,115
in continent
World
#43,242
out of 400,000+
National ranking
Europe & World
Europe
World
Japan
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Asia-Pacific
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| 5115 | 1,920 | |
World
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