Format
JK
Jelagin, Konstantin
🇨🇿FIDE 313327· Male· Czech Republic· Born in 1948
Follow Konstantin JelaginTrack his monthly FIDE ratings, games, tournaments and more.
Konstantin Jelagin, a 78-year-old Czech player, is rated 1905. He plays occasionally (2 games in the last 12 months) and had 2 career breaks: 126 months (2002–2013) and 22 months (2024–2026). Recent appearance: SSS - Krajska soutez - skupina A 2025-2026 r8-9. His peak of 2274 was reached at age 53 (Oct 2001).
Previously known as Petr Mach (until May 2013).
Current rating
1905
Standard
Rpd1938·Blz—
All-time high
2274
−369 pts below
Oct 2001 · age 53
Oct 2001 · age 53
Activity
1
games / yr avg.
2 past 12 mo
classical only
Occasional
classical only
Occasional
Signature stat
#46,947
#46,947 · players worldwide · of 216,808
Career timeline
15 entries2026
41st Czech 75-80 player
at age 78 · rated 1905
May 2026
2024
Best 12-month gain (+60 Elo)
1850 → 1910
Mar 2024
Inactive for 22 months
paused at 1910 → returned at 1898
Mar 2024
2022
83rd Czech 70-75 player
at age 74 · rated 1864
Apr 2022
2017
100 career games
at age 69
Mar 2017
2016
K-factor lowered to 20
at age 68
Nov 2016
Standard rating history
Last 12 months — activity & highlights
Top opponent
Evolution
-5
1910 → 1905
Tournaments
2
3 games
Score
1/ 333.3%
1W0D2L
Top 1 win
Top 1 loss
Last 12 months — tournaments
2 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Feb 2026 | 1/1 | #51 | 2589 | +7.0 |
Team | Jan 2026 | 0/1 | #92 | 1042 | -11.8 |
Rankings
/
Czech Republic
#1,954
out of 6,368 players
Europe
#34,576
in continent
World
#46,947
out of 400,000+
National ranking
Europe & World
Europe
World
Czech Republic
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