Format
AS
Alfonso, Sebastian
🇦🇷FIDE 20004028· Male· Argentina· Born in 1995
Follow Sebastian AlfonsoTrack his monthly FIDE ratings, games, tournaments and more.
Sebastian Alfonso, a 31-year-old Argentine player, is rated 1654. He has fluctuated between 1634 and 1691 over the past 2 years. 23 rated games in the past year (≈17/year long-term). Recent standard appearances include II TORNEO IRT CLASICO SUB 2400 - BARRANCO CREMA, IRT Memorial Benito Villegas 2026, and IRT Memorial Benito Villegas. He took a 14-month break between Apr 2022 and Jul 2023. His peak of 1691 was reached at age 30 (Aug 2025).
Current rating
1654
Standard
Rpd—·Blz—
All-time high
1691
−37 pts below
Aug 2025 · age 30
Aug 2025 · age 30
Activity
19
games / yr avg. · ≈2/mo
23 past 12 mo · ≈2/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#126,229
#126,229 · players worldwide · of 216,808
Career timeline
8 entries2025
All-time peak 1691
at age 30 · −37 from today
Aug 2025
Best 12-month gain (+230 Elo)
1448 → 1678
Feb 2025
2024
K-factor lowered to 20
at age 29
Jun 2024
Crossed 1600
at age 29
Mar 2024
Crossed 1500
at age 29
Mar 2024
2022
Inactive for 14 months
paused at 1468 → returned at 1457
Apr 2022
Standard rating history
Last 12 months — activity & highlights
Top opponent
Evolution
-27
1681 → 1654
Tournaments
5
26 games
Score
13/ 2650.0%
13W0D13L
Top 3 wins
2.[W]vsJoaquin Ignacio Cardenas Corona1,824·II TORNEO IRT CLASICO SUB 2400 - BARRANCO CREMA·R5·+14.5
Top 3 losses
Last 12 months — tournaments
5 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | Mar 2026 | 3/4 | #7 | 2015 | +19.4 |
Swiss | Feb 2026 | 3/6 | #11 | 1638 | +1.6 |
Swiss | Oct 2025 | 0/4 | #28 | 731 | -57.0 |
Swiss | Jul 2025 | 2/3 | #6 | 1796 | +9.6 |
Swiss | May 2025 | 5/6 | #2 | 1925 | +40.8 |
Rankings
/
Argentina
#1,559
out of 3,279 players
Americas
#15,396
in continent
World
#126,223
out of 400,000+
National ranking
Europe & World
Europe
World
Argentina
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| 8 | 🇦🇷Follow Pablo ZarnickiTrack their monthly FIDE ratings, games, tournaments and more. | 2,508 |
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| 10 | 🇦🇷Follow Leonardo TristanTrack their monthly FIDE ratings, games, tournaments and more. | 2,490 |
| ... | ||
| 1559 | 1,654 | |
Americas
| 1 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 2 | 🇺🇸Follow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more. | 2,788 |
| 3 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,754 |
| 4 | 🇺🇸Follow Leinier Dominguez PerezTrack their monthly FIDE ratings, games, tournaments and more. | 2,732 |
| 5 | 🇺🇸Follow Hans Moke NiemannTrack their monthly FIDE ratings, games, tournaments and more. | 2,728 |
| 6 | 🇺🇸Follow Levon AronianTrack their monthly FIDE ratings, games, tournaments and more. | 2,724 |
| 7 | 🇺🇸Follow Awonder LiangTrack their monthly FIDE ratings, games, tournaments and more. | 2,718 |
| 8 | 🇺🇸Follow Samuel SevianTrack their monthly FIDE ratings, games, tournaments and more. | 2,696 |
| 9 | 🇺🇸Follow Jeffery XiongTrack their monthly FIDE ratings, games, tournaments and more. | 2,656 |
| 10 | 🇺🇸Follow Ray RobsonTrack their monthly FIDE ratings, games, tournaments and more. | 2,653 |
| ... | ||
| 15396 | 1,654 | |
World
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,840 |
| 2 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 3 | 🇺🇸Follow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more. | 2,788 |
| 4 | 🇺🇿Follow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more. | 2,780 |
| 5 | 🇺🇿Follow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,776 |
| 6 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 7 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,759 |
| 7 | 🇫🇷Follow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more. | 2,759 |
| 9 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,754 |
| 10 | 🇨🇳Follow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| ... | ||
| 126223 | 1,654 | |