Format
ZM
Zhou, Mason Lou
🇺🇸FIDE 39937941· Male· United States of America· Born in 2013
Follow Mason Lou ZhouTrack his monthly FIDE ratings, games, tournaments and more.
Mason Lou Zhou, a 13-year-old American player, is rated 1670. He is on a steady climb with +47 Elo over the past 12 months. 19 rated games in the past year (≈25/year long-term). Recent standard appearances include The Atlantic City Open - U2000, 2025 December Marshall Premier FIDE - U2000, and 56th Annual National Chess Congress - U2000. His peak of 1714 was reached at age 13 (Feb 2026).
Current rating
1670
Standard
Rpd—·Blz1544
All-time high
1714
−44 pts below
Feb 2026 · age 13
Feb 2026 · age 13
Activity
24
games / yr avg. · ≈2/mo
19 past 12 mo · ≈2/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#120,428
#120,428 · players worldwide · of 216,808
Career timeline
6 entries2026
Best 12-month gain (+90 Elo)
1624 → 1714
Feb 2026
All-time peak 1714
at age 13 · −44 from today
Feb 2026
2024
Crossed 1600
at age 11
Apr 2024
Crossed 1500
at age 11
Apr 2024
Crossed 1400
at age 11
Apr 2024
First FIDE rating
1662 · at age 11
Apr 2024
Standard rating history
Last 12 months — activity & highlights
Evolution
+47
1623 → 1670
Tournaments
5
27 games
Score
15/ 2755.6%
11W8D8L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
5 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | Apr 2026 | 3/5 | #16 | 1699 | -41.2 |
Open Swiss | Dec 2025 | 2/4 | #17 | 1636 | -0.8 |
Open Swiss | Nov 2025 | 3.5/4 | #20 | 2059 | +36.0 |
Open Swiss | Nov 2025 | 3.5/4 | #17 | 2059 | +36.0 |
Open Swiss | Jun 2025 | 3/2 | #21 | 2581 | +16.4 |
Rankings
/
United States of America
#3,633
out of 5,412 players
Americas
#14,625
in continent
World
#120,423
out of 400,000+
National ranking
Europe & World
Europe
World
United States of America
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