Format
DL
De la Sierra Mendibil, Aitor
🇪🇸FIDE 94721297· Male· Spain· Born in 2008
Follow Aitor De la Sierra MendibilTrack his monthly FIDE ratings, games, tournaments and more.
Aitor De La Sierra Mendibil, a 18-year-old Spanish player, is rated 1834 — his current career high. He is progressing steadily with +61 Elo over the past 12 months. 23 rated games in the past year (≈18/year long-term). Recent standard appearances include Campeonto de Euskadi Juvenil S18 2026, Campeonato de Euskadi por Equipos Primera-26 Rondas 9, and Campeonato de Euskadi por Equipos Primera-26 Rondas 5-7.
Current rating
1834
Standard
Rpd—·Blz—
All-time high
1834
at best
May 2026 · age 18
May 2026 · age 18
Activity
18
games / yr avg. · ≈2/mo
23 past 12 mo · ≈2/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#66,011
#66,011 · players worldwide · of 218,279
Career timeline
5 entries2026
All-time peak 1834
at age 18
May 2026
2025
Crossed 1800
at age 17
Nov 2025
2024
Best 12-month gain (+292 Elo)
1438 → 1730
Nov 2024
Crossed 1600
at age 16
Mar 2024
First FIDE rating
1438 · at age 16
Jan 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
FIDE recal.
Activity & highlights
Top opponent
Evolution
+61
1773 → 1834
Tournaments
9
26 games
Score
14.5/ 2655.8%
12W7D7L
Top 3 wins
2.[W]vsJaime Barranco Yanez1,710·Campeonato Segunda de Euskadi - Zonal de Bizkaia 2025 Rondas 4-6·R4·+14.3
Top 3 losses
1.[L]vsMiguel Angel Ibanez Baz1,747·Campeonato Segunda de Euskadi - Zonal de Bizkaia 2025 Rondas 4-6·R5·-23.7
Last 12 months — tournaments
9 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | Apr 2026 | 4/7 | #9 | 1838 | +6.8 |
Round-Robin | Mar 2026 | 0/1 | #32 | 1326 | -6.0 |
Round-Robin | Feb 2026 | 0.5/2 | #50 | 1847 | +4.0 |
Round-Robin | Jan 2026 | 1/1 | #11 | 2739 | +27.2 |
Round-Robin | Jan 2026 | 0/1 | #47 | 957 | -22.8 |
Swiss | Dec 2025 | 4/4 | #6 | 2498 | +16.8 |
Swiss | Nov 2025 | 0.5/1 | #21 | 1715 | -4.4 |
Swiss | Nov 2025 | 1.5/3 | #30 | 1772 | -4.4 |
Swiss | Oct 2025 | 3/3 | #3 | 2468 | +43.2 |
Worst Elo result: Campeonato de Euskadi por Equipos Primera-26 Rondas 1-3 (-22.8 Elo, finished #47).
Rankings
/
Spain
#6,065
out of 20,300 players
Europe
#48,156
in continent
World
#66,010
out of 400,000+
National ranking
Europe & World
Europe
World
Spain
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