Format
GM
Grullon Mata, Adelso Bienvenido
🇩🇴FIDE 6422543· Male· Dominican Republic· Born in 1986
Follow Adelso Bienvenido Grullon MataTrack his monthly FIDE ratings, games, tournaments and more.
Adelso Bienvenido Grullon Mata, a 40-year-old player, is rated 1704. He has slipped back 64 Elo over the past 12 months. 12 rated games in the past year (≈4/year long-term). Recent standard appearances include Torneo por Equipos de Santiago 2025, EMECONCI 2025 U1800, and Torneo de Ajedrez en Homenaje a Luis Fernando Martinez ISAEL 2025. Also played 2 rapid (including Copa Rapida de Ajedrez Juan Pablo Duarte FDA 2026) and 1 blitz events (including Copa Blitz de Ajedrez Juan Pablo Duarte 2026) recently. He had 3 career breaks: 26 months (2019–2021, COVID-19 included), 23 months (2021–2023) and 23 months (2023–2025). His peak of 1768 was reached at age 38 (Mar 2024).
Current rating
1704
Standard
Rpd1753·Blz1754
All-time high
1768
−64 pts below
Mar 2024 · age 38
Mar 2024 · age 38
Activity
5
games / yr avg.
12 past 12 mo · ≈1/mo
classical only
Occasional
classical only
Occasional
Signature stat
#108,530
#108,530 · players worldwide · of 218,279
Career timeline
12 entries2026
K-factor lowered to 20
at age 40
Feb 2026
2024
Best 12-month gain (+159 Elo)
1609 → 1768
Mar 2024
All-time peak 1768
at age 38 · −64 from today
Mar 2024
2023
Inactive for 23 months
paused at 1613 → returned at 1730
Jul 2023
2022
34th 35-40 player nationally
at age 36 · rated 1609
Apr 2022
2021
Inactive for 23 months
paused at 1609 → returned at 1613
Jul 2021
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
FIDE recal.
Activity & highlights
Best result
Torneo de Ajedrez en Homenaje a Luis Fernando Martinez ISAEL 2025perf 1940 (+210) · 4/5 · #16
Evolution
-26
1730 → 1704
Tournaments
3
16 games
Score
8.5/ 1653.1%
8W1D7L
Top 3 wins
Top 3 losses
1.[L]vsAngel Moises Perez Luna1,572·Torneo de Ajedrez en Homenaje a Luis Fernando Martinez ISAEL 2025·R3·-28.5
3.[L]vsDalver Paulino Rosario1,810·Torneo de Ajedrez en Homenaje a Luis Fernando Martinez ISAEL 2025·R6·-15.5
Last 12 months — tournaments
3 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Dec 2025 | 1/4 | #34 | 1565 | -44.0 |
Swiss | Jul 2025 | 3.5/3 | #6 | 2514 | +17.6 |
Swiss | Jun 2025 | 4/5 | #16 | 1940 | -38.4 |
Rankings
/
Dominican Republic
#253
out of 544 players
Americas
#12,989
in continent
World
#108,527
out of 400,000+
National ranking
Europe & World
Europe
World
Dominican Republic
| 1 | 🇩🇴Follow Jose Lisandro Munoz SantanaTrack their monthly FIDE ratings, games, tournaments and more. | 2,340 |
| 2 | 🇩🇴Follow Victor Mendez RamirezTrack their monthly FIDE ratings, games, tournaments and more. | 2,334 |
| 3 | 🇩🇴Follow Josue Araujo SanchezTrack their monthly FIDE ratings, games, tournaments and more. | 2,331 |
| 4 | 🇩🇴Follow Juan Carlos Mesa CruzTrack their monthly FIDE ratings, games, tournaments and more. | 2,323 |
| 5 | 🇩🇴Follow Carlos Paul Abreu JeanTrack their monthly FIDE ratings, games, tournaments and more. | 2,263 |
| 6 | 🇩🇴Follow Christopher GuzmanTrack their monthly FIDE ratings, games, tournaments and more. | 2,236 |
| 7 | 🇩🇴Follow Miguel Antonio Infante GuerreroTrack their monthly FIDE ratings, games, tournaments and more. | 2,232 |
| 8 | 🇩🇴Follow Leandro Jimenez JimenezTrack their monthly FIDE ratings, games, tournaments and more. | 2,213 |
| 9 | 🇩🇴Follow David Daniel Camacho CampusanoTrack their monthly FIDE ratings, games, tournaments and more. | 2,212 |
| 10 | 🇩🇴Follow Nelson Damian Alvarado SepulvedaTrack their monthly FIDE ratings, games, tournaments and more. | 2,187 |
| ... | ||
| 253 | 1,704 | |
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 |
| ... | ||
| 12989 | 1,704 | |
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 |
| 2 | 🇺🇸Follow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 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 |
| 9 | 🇨🇳Follow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| ... | ||
| 108527 | 1,704 | |