Format
SW
Si, William
🇳🇿FIDE 4313836· Male· New Zealand· Born in 2013
Follow William SiTrack his monthly FIDE ratings, games, tournaments and more.
William Si, a 13-year-old player, is rated 1457 — just 21 short of his peak of 1478 (Feb 2025, age 12). He plays occasionally (4 games in the last 12 months). Recent appearance: 2025 Oceania Youth Championship U12 Open.
At junior level, he reached #52, #24 and #8 nationally in U14, U12 and U10.
Current rating
1457
Standard
Rpd1544·Blz1584
All-time high
1478
−21 pts below
Feb 2025 · age 12
Feb 2025 · age 12
Activity
6
games / yr avg. · ≈1/mo
4 past 12 mo
classical only
Occasional
classical only
Occasional
Signature stat
#201,582
#201,582 · players worldwide · of 218,279
Career timeline
8 entries2026
52nd U14 player nationally
at age 13 · rated 1458
Jan 2026
2025
Best 12-month gain (+389 Elo)
1089 → 1478
Feb 2025
All-time peak 1478
at age 12 · −21 from today
Feb 2025
2024
Crossed 1400
at age 11
Mar 2024
Crossed 1200
at age 11
Mar 2024
24th U12 player nationally
at age 11 · rated 1089
Jan 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
FIDE recal.
Activity & highlights
Top opponent
Evolution
-21
1478 → 1457
Tournaments
1
9 games
Score
4.5/ 950.0%
4W1D4L
Top 1 win
Top 3 losses
Last 12 months — tournaments
1 event| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | Dec 2025 | 4.5/4 | #36 | 2481 | -20.8 |
Rankings
/
New Zealand
#422
out of 648 players
Asia-Pacific
#44,615
in continent
World
#201,439
out of 400,000+
National ranking
Europe & World
Europe
World
New Zealand
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Asia-Pacific
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| 44615 | 1,457 | |
World
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| 201439 | 1,457 | |