Format
Heimann, Mark
GM🇺🇸FIDE 2028441· Male· United States of America· Born in 1993
Follow Mark HeimannTrack his monthly FIDE ratings, games, tournaments and more.
Mark Heimann, a 33-year-old American Grandmaster, is rated 2482 and ranked 47th among American players, and in the top 1% worldwide. He has slipped back 30 Elo over the past 12 months. 56 rated games in the past year (≈22/year long-term). Recent standard appearances include 2026 Saint Louis Masters, 23rd Konig Memorial Tournament - 2000 and Over, and 17th Annual Golden State Open - Major. Also played 1 rapid (including 2025 September Mechanics' Weekend - Rapid) and 4 blitz events (including The American Cup 2026 - Blitz) recently. He had 2 career breaks: 27 months (2009–2012) and 19 months (2015–2016). His peak of 2520 was reached at age 32 (Sep 2025, World #461 at the time).
Awarded GM in 2025 (age 32), IM in 2023 (age 30), and FM in 2016 (age 23). At junior level, he reached World #44 in U16, World #16 in U14 and #9 and #8 nationally in U20 and U18.
Current rating
2482
Standard
Rpd2436·Blz2417
All-time high
2520
−38 pts below
Sep 2025 · age 32
Sep 2025 · age 32
Activity
76
games / yr avg. · ≈6/mo
56 past 12 mo · ≈5/mo
classical only
Active
classical only
Active
Signature stat
#47
#47 · American players · of 5,026
Career timeline
20 entries2025
Peak World rank: #461
at age 32 · rated 2520
Oct 2025
All-time peak 2520
at age 32 · −41 from today
Sep 2025
GM title awardedGM
at age 32 · 2025 1st FIDE Council
Apr 2025
Peak American rank: #35
at age 32 · rated 2512
Mar 2025
Best 12-month gain (+77 Elo)
2435 → 2512
Feb 2025
Crossed 2500
at age 32
Jan 2025
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
Activity & highlights
Top opponent
Evolution
-31
2513 → 2482
Tournaments
8
52 games
Score
37/ 5271.2%
28W18D6L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
8 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | May 2026 | 2.5/3 | #1 | 2408 | +3.3 |
Open Swiss | Feb 2026 | 3.5/9 | #55 | 2210 | -34.3 |
Swiss | Jan 2026 | 3/3 | #6 | 2722 | +2.4 |
Open Swiss | Jan 2026 | 5/6 | #4 | 2331 | -3.0 |
Swiss | Jan 2026 | 3.5/5 | #6 | 2422 | -3.7 |
Open Swiss | Nov 2025 | 7/9 | #2 | 2459 | -1.5 |
Open Swiss | Jul 2025 | 6/8 | #21 | 2517 | +1.5 |
Round-Robin | Jul 2025 | 6.5/9 | #1 | 2548 | +5.3 |
Most-Played Opponents
vsChristopher Woojin YooGM
🇺🇸USA·2605
+0 −7 =3
10 games·last met May 2026
View head-to-head →
vsJoshua PosthumaIM
🇺🇸USA·2374
+3 −0 =5
8 games·last met Nov 2023
View head-to-head →
vsRose AtwellFM
🇺🇸USA·2410
+3 −1 =3
7 games·last met Mar 2026
View head-to-head →
vsSivavishnu Srinivasan
🇺🇸USA·1980
+6 −0 =0
6 games·last met Jan 2026
View head-to-head →
vsJosiah StearmanIM
🇺🇸USA·2477
+0 −4 =2
6 games·last met May 2024
View head-to-head →
Rankings
/
United States of America
#47
out of 5,510 players
Americas
#88
in continent
World
#731
out of 400,000+
National ranking
Europe & World
Europe
World
United States of America
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| 10 | 🇺🇸Follow Ray RobsonTrack their monthly FIDE ratings, games, tournaments and more. | 2,653 |
| ... | ||
| 47 | 2,482 | |
Americas
| 1 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 1 | 🇺🇸Follow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 3 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| 4 | 🇺🇸Follow Hans Moke NiemannTrack their monthly FIDE ratings, games, tournaments and more. | 2,742 |
| 5 | 🇺🇸Follow Leinier Dominguez PerezTrack their monthly FIDE ratings, games, tournaments and more. | 2,732 |
| 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. | 2,696 |
| 7 | 🇺🇸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 |
| ... | ||
| 88 | 2,482 | |
World
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| 2 | 🇺🇸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. | 2,792 |
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| 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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| ... | ||
| 731 | 2,482 | |