Format
DJ
De Jong, Sjef
🇦🇺FIDE 3261840· Male· Australia· Born in 1957
Follow Sjef De JongTrack his monthly FIDE ratings, games, tournaments and more.
Sjef De Jong, a 69-year-old Australian player, is rated 1597. He has fluctuated between 1595 and 1631 over the past 2 years. 18 rated games in the past year (≈14/year long-term). Recent standard appearances include 2026 Robert Pilgrim Open Rounds 1-4, 2025 Perth International Open, and 2025 Richard Lilly Swiss Rounds 4-7. His peak of 1641 was reached at age 67 (Apr 2024).
Current rating
1597
Standard
Rpd—·Blz—
All-time high
1641
−44 pts below
Apr 2024 · age 67
Apr 2024 · age 67
Activity
12
games / yr avg. · ≈1/mo
16 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#148,179
#148,179 · players worldwide · of 218,279
Career timeline
11 entries2025
Re-crossed 1600
at age 68
Sep 2025
Re-crossed 1600
at age 68
Jun 2025
2024
K-factor lowered to 20
at age 67
Aug 2024
Best 12-month gain (+242 Elo)
1389 → 1631
Jul 2024
All-time peak 1641
at age 67 · −44 from today
Apr 2024
Crossed 1600
at age 67
Mar 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
FIDE recal.
Activity & highlights
Evolution
+2
1595 → 1597
Tournaments
4
17 games
Score
5.5/ 1732.4%
3W5D9L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
4 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | May 2026 | 1/2 | #43 | 1804 | -10.2 |
Open Swiss | Sep 2025 | 1.5/5 | #33 | 1664 | +6.2 |
Swiss | Jul 2025 | 2/3 | #17 | 1776 | +5.0 |
Swiss | Jul 2025 | 1/3 | #12 | 1616 | +1.4 |
Rankings
/
Australia
#1,182
out of 2,432 players
Asia-Pacific
#24,273
in continent
World
#148,166
out of 400,000+
National ranking
Europe & World
Europe
World
Australia
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