Format
ST
Sideris, Theodoros
🇬🇷FIDE 4203704· Male· Greece· Born in 1965
Follow Theodoros SiderisTrack his monthly FIDE ratings, games, tournaments and more.
Theodoros Sideris, a 61-year-old Greek player, is rated 1954. He is on a steady climb with +40 Elo over the past 12 months. 141 rated games in the past year (≈103/year long-term). Recent standard appearances include 2026 Team Championship of ESSNA - C Category, 195th Open SO Ampelokipon Jan 2026, and 21st Siaperas Triantafyllos Open 2026. Also played 2 rapid (including 2025 Attica Rapid Championship Theodoros Papatheodorou) and 1 blitz events (including 2025 Attica Team Blitz Championship) recently. His peak of 2115 was reached at age 40 (Jan 2005).
Current rating
1954
Standard
Rpd1874·Blz1823
All-time high
2115
−161 pts below
Jan 2005 · age 40
Jan 2005 · age 40
Activity
136
games / yr avg. · ≈11/mo
127 past 12 mo · ≈11/mo
classical only
Very active
classical only
Very active
Signature stat
#35,852
#35,852 · players worldwide · of 218,279
Career timeline
29 entries2026
23rd Greek 60-65 player
at age 61 · rated 1954
Jun 2026
2025
27th Greek 55-60 player
at age 60 · rated 1927
Sep 2025
2,500 career games
at age 60
Jul 2025
2023
Best 12-month gain (+166 Elo)
1643 → 1809
Feb 2023
2018
26th Greek 50-55 player
at age 53 · rated 2052
May 2018
6-month rising streak
+139 Elo
May 2018
Standard rating history
Peak
FIDE title
Threshold
First rated
COVID-19
FIDE recal.
Activity & highlights
Evolution
+29
1925 → 1954
Tournaments
16
107 games
Score
68.5/ 10764.0%
57W24D26L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
16 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | Mar 2026 | 4.5/7 | #4 | 1898 | +5.0 |
Open Swiss | Mar 2026 | 4/7 | #16 | 1922 | +8.8 |
Open Swiss | Jan 2026 | 8/8 | #2 | 2681 | +58.6 |
Open Swiss | Jan 2026 | 3.5/6 | #11 | 1855 | -2.4 |
Open Swiss | Jan 2026 | 5/7 | #7 | 1855 | -2.2 |
Open Swiss | Jan 2026 | 3/5 | #15 | 1863 | +1.2 |
Swiss | Nov 2025 | 5.5/7 | #3 | 1941 | +13.4 |
Swiss | Nov 2025 | 3/6 | #16 | 1725 | -23.0 |
Team | Nov 2025 | 3.5/6 | #37 | 1857 | -2.8 |
Team | Oct 2025 | 2/1 | #50 | 2531 | +5.4 |
Most-Played Opponents
vsDimitrios Delithanasis
🇬🇷GRE·1886
+9 −45 =16
70 games·last met Jan 2026
View head-to-head →
vsLoukas Papadimitriou
🇬🇷GRE·1983
+8 −18 =11
37 games·last met Mar 2026
View head-to-head →
vsZbigniew Sienczewski
🇵🇱POL·1901
+4 −14 =18
36 games·last met Apr 2017
View head-to-head →
vsDimitrios Vazelakis
🇬🇷GRE·1912
+14 −9 =10
33 games·last met Jan 2026
View head-to-head →
vsHristoforos Nemtsas
🇬🇷GRE·1992
+14 −15 =3
32 games·last met Apr 2026
View head-to-head →
Rankings
/
Greece
#454
out of 3,681 players
Europe
#26,489
in continent
World
#35,851
out of 400,000+
National ranking
Europe & World
Europe
World
Greece
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| 2 | 🇬🇷Follow Ioannis PapaioannouTrack their monthly FIDE ratings, games, tournaments and more. | 2,611 |
| 3 | 🇬🇷Follow Antonios PavlidisTrack their monthly FIDE ratings, games, tournaments and more. | 2,573 |
| 4 | 🇬🇷Follow Stamatis Kourkoulos-ArditisTrack their monthly FIDE ratings, games, tournaments and more. | 2,570 |
| 5 | 🇬🇷Follow Hristos BanikasTrack their monthly FIDE ratings, games, tournaments and more. | 2,545 |
| 6 | 🇬🇷Follow Dimitrios MastrovasilisTrack their monthly FIDE ratings, games, tournaments and more. | 2,525 |
| 7 | 🇬🇷Follow Dimitris AlexakisTrack their monthly FIDE ratings, games, tournaments and more. | 2,524 |
| 8 | 🇬🇷Follow Stelios HalkiasTrack their monthly FIDE ratings, games, tournaments and more. | 2,505 |
| 9 | 🇬🇷Follow Evaggelos PatrelakisTrack their monthly FIDE ratings, games, tournaments and more. | 2,483 |
| 9 | 🇬🇷Follow Anatole VlachosTrack their monthly FIDE ratings, games, tournaments and more. | 2,483 |
| ... | ||
| 454 | 1,954 | |
Europe
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| 2 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 3 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
| 4 | 🇫🇷Follow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more. | 2,744 |
| 5 | 🇵🇱Follow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more. | 2,739 |
| 6 | 🇭🇺Follow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more. | 2,729 |
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| 8 | 🇫🇷Follow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more. | 2,721 |
| 9 | 🇦🇿Follow Shakhriyar MamedyarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,717 |
| 10 | 🇹🇷Follow Yagiz Kaan ErdogmusTrack their monthly FIDE ratings, games, tournaments and more. | 2,713 |
| ... | ||
| 26489 | 1,954 | |
World
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,841 |
| 2 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
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| 4 | 🇺🇿Follow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more. | 2,777 |
| 4 | 🇺🇿Follow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,777 |
| 6 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 7 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
| 8 | 🇮🇳Follow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more. | 2,761 |
| 9 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
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| ... | ||
| 35851 | 1,954 | |