Format
KW
Kosak, Whitman
🇺🇸FIDE 39906647· Male· United States of America· Born in 2007
Follow Whitman KosakTrack his monthly FIDE ratings, games, tournaments and more.
Whitman Kosak, a 19-year-old American player, is rated 1859. He plays occasionally (7 games in the last 12 months) and took a 12-month break between Nov 2024 and Dec 2025. Recent appearances: 2026 Tim Just Winter Open XLII - U2100 and 34th Annual King's Island Open - U2100. His peak of 1908 was reached at age 17 (May 2024).
Current rating
1859
Standard
Rpd—·Blz—
All-time high
1908
−49 pts below
May 2024 · age 17
May 2024 · age 17
Activity
11
games / yr avg. · ≈1/mo
7 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#58,854
#58,854 · players worldwide · of 216,808
Career timeline
6 entries2026
K-factor lowered to 20
at age 19
Jan 2026
2024
Inactive for 12 months
paused at 1866 → returned at 1864
Nov 2024
Best 12-month gain (+283 Elo)
1625 → 1908
May 2024
All-time peak 1908
at age 17 · −49 from today
May 2024
Crossed 1800
at age 17
Apr 2024
2023
First FIDE rating
1637 · at age 16
Feb 2023
Standard rating history
Last 12 months — activity & highlights
Evolution
-7
1866 → 1859
Tournaments
2
8 games
Score
5/ 862.5%
4W2D2L
Top 3 wins
Top 2 losses
Last 12 months — tournaments
2 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | Jan 2026 | 3/5 | #2 | 1821 | -5.0 |
Open Swiss | Nov 2025 | 2/2 | #41 | 2647 | -1.6 |
Rankings
/
United States of America
#1,617
out of 5,412 players
Americas
#6,602
in continent
World
#58,854
out of 400,000+
National ranking
Europe & World
Europe
World
United States of America
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| 6602 | 1,859 | |
World
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