Format
AS
Alonso, Sergio
🇦🇷FIDE 172448· Male· Argentina· Born in 1967
Follow Sergio AlonsoTrack his monthly FIDE ratings, games, tournaments and more.
Sergio Alonso, a 59-year-old Argentine player, is rated 1836 — just 1 short of his peak of 1837 (Mar 2026, age 59). He is on a breakout run, having gained +82 Elo over the past 12 months. 55 rated games in the past year (≈30/year long-term). Recent standard appearances include IRT Memorial Benito Villegas 2026, IRT ABIERTO CON LOS MAESTROS 2026 "CON EL GM ALAN PICHOT", and 75 Aniversario Torneo de Verano de Villa Ballester 2026. Also played 1 rapid (including IV TORNEO IRT RAPIDO HUMBERTO URIBE ADAMAS 2025) and 1 blitz events (including I TORNEO IRT BLITZ HUMBERTO URIBE ADAMAS 2025) recently. He had 2 career breaks: 25 months (2009–2011) and 14 months (2011–2012).
Current rating
1836
Standard
Rpd1835·Blz1789
All-time high
1837
−1 pts below
Mar 2026 · age 59
Mar 2026 · age 59
Activity
51
games / yr avg. · ≈4/mo
55 past 12 mo · ≈5/mo
classical only
Active
classical only
Active
Signature stat
#65,440
#65,440 · players worldwide · of 218,279
Career timeline
15 entries2026
49th Argentine 55-60 player
at age 59 · rated 1837
May 2026
Crossed 1800
at age 59
Mar 2026
All-time peak 1837
at age 59 · −1 from today
Mar 2026
500 career games
at age 59
Mar 2026
2025
Best 12-month gain (+118 Elo)
1636 → 1754
Feb 2025
2020
42nd Argentine 50-55 player
at age 53 · rated 1734
Oct 2020
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
FIDE recal.
Activity & highlights
Top opponent
Evolution
+82
1754 → 1836
Tournaments
11
68 games
Score
41/ 6860.3%
35W12D21L
Top 3 wins
2.[W]vsAlejandro Hernan Airoli1,951·75 Aniversario Torneo de Verano de Villa Ballester 2026·R7·+14.1
3.[W]vsMisael Alvarez Planxart1,924·IRT ABIERTO CON LOS MAESTROS 2026 "CON EL GM ALAN PICHOT"·R2·+12.5
Top 3 losses
Last 12 months — tournaments
11 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | May 2026 | 3.5/4 | #25 | 2060 | -1.4 |
Swiss | Feb 2026 | 4/6 | #6 | 1873 | +12.8 |
Swiss | Feb 2026 | 3.5/4 | #14 | 2297 | +26.6 |
Open Swiss | Jan 2026 | 4.5/8 | #43 | 1989 | +47.4 |
Swiss | Jan 2026 | 4/5 | #11 | 2010 | +12.8 |
Open Swiss | Jan 2026 | 2.5/4 | #65 | 2021 | -11.6 |
Round-Robin | Dec 2025 | 4.5/8 | #6 | 1944 | +18.2 |
Open Swiss | Nov 2025 | 3/5 | #67 | 1803 | -13.2 |
Swiss | Nov 2025 | 3.5/3 | #5 | 2421 | -9.6 |
Open Swiss | Aug 2025 | 3.5/5 | #52 | 1909 | -18.4 |
Most-Played Opponents
vsAdrian Hernan Muruchi Machaca
🇦🇷ARG·1857
+2 −7 =3
12 games·last met Dec 2025
View head-to-head →
vsGerman Harriet
🇦🇷ARG·1910
+4 −4 =2
10 games·last met Dec 2025
View head-to-head →
vsPedro Bustos
🇦🇷ARG·1578
+6 −0 =2
8 games·last met May 2026
View head-to-head →
vsFernando Garcia
🇦🇷ARG·1767
+4 −3 =1
8 games·last met Aug 2025
View head-to-head →
vsLucas Rivas
🇦🇷ARG·1924
+1 −5 =1
7 games·last met Apr 2023
View head-to-head →
Rankings
/
Argentina
#830
out of 3,298 players
Americas
#7,381
in continent
World
#65,439
out of 400,000+
National ranking
Europe & World
Europe
World
Argentina
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World
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