Derek Clasby
Country
USA
Birth Year
2006
Gender
M
Title
FIDE Master
FIDE ID
30932300
USCF ID
15194211
USCF Rating
2427
USCF rating history
View rating lists
FIDE rating history
View rating lists
Available Games
Published games available in our archive; coverage varies by tournament. Archive last checked: 2026-10-23 (UTC).
Online games are identified from known tournament names, playing sites and PGN mode. Other games are listed as OTB (over-the-board).
| # | Date | Event | Site | Round | White | Black | Result | Moves | View |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-05 | 54th Annual World Open | Washington DC USA | 9.15 | Clasby,Derek | Shvarts,Tim | 1/2-1/2 | 71 | Open |
| 2 | 2026-07-05 | 54th Annual World Open | Washington DC USA | 8.14 | Baron,Ta | Clasby,Derek | 1/2-1/2 | 77 | Open |
| 3 | 2026-07-04 | 54th Annual World Open | Washington DC USA | 6.5 | Xue,Haowen | Clasby,Derek | 1-0 | 48 | Open |
| 4 | 2026-07-03 | 54th Annual World Open | Washington DC USA | 5.17 | Clasby,Derek | Kaplan,Avi Harrison | 1-0 | 60 | Open |
| 5 | 2026-07-02 | 54th Annual World Open | Washington DC USA | 2.22 | Jammalamadaka,Vihaan | Clasby,Derek | 1-0 | 39 | Open |
| 6 | 2025-07-03 | 53rd Annual World Open | Philadelphia USA | 3.1 | Jeffery Xiong | Derek Clasby | 1-0 | 38 | Open |
| 7 | 2024-06-06 | 52nd Annual World Open | Philadelphia USA | 6.16 | Derek Clasby | Arystanbek Urazayev | 1/2-1/2 | 40 | Open |
| 8 | 2024-06-05 | 52nd Annual World Open | Philadelphia USA | 4.39 | Derek Clasby | Theodore Slade | 1-0 | 54 | Open |
| 9 | 2024-06-04 | 52nd Annual World Open | Philadelphia USA | 2.2 | Derek Clasby | Vasif Durarbayli | 0-1 | 44 | Open |
| 10 | 2023-08-16 | 10th Washington Int 2023 | Rockville USA | 9.9 | Derek Clasby | Pedro Espinosa | 1-0 | 34 | Open |
| 11 | 2023-08-14 | 10th Washington Int 2023 | Rockville USA | 6.9 | Aaron Jacobson | Derek Clasby | 1-0 | 32 | Open |
| 12 | 2023-08-14 | 10th Washington Int 2023 | Rockville USA | 5.7 | Derek Clasby | Zachary Tanenbaum | 0-1 | 65 | Open |
| 13 | 2023-08-13 | 10th Washington Int 2023 | Rockville USA | 4.1 | Qi Pang | Derek Clasby | 0-1 | 37 | Open |
| 14 | 2023-08-12 | 10th Washington Int 2023 | Rockville USA | 2.5 | Luka Budisavljevic | Derek Clasby | 1-0 | 50 | Open |
| 15 | 2022-11-24 | US Chess Masters 2022 | Charlotte USA | 3.23 | Derek Clasby | Emilio Cordova | 0-1 | 36 | Open |
| 16 | 2022-08-13 | 9th Washington Int 2022 | Rockville USA | 1 | Derek Clasby | Brandon Jacobson | 0-1 | 42 | Open |
| 17 | 2022-07-03 | 50th Annual World Open | Philadelphia USA | 6 | Raghav Venkat | Derek Clasby | 1/2-1/2 | 66 | Open |
| 18 | 2022-06-30 | 50th Annual World Open | Philadelphia USA | 1 | Derek Clasby | Illya Nyzhnyk | 1/2-1/2 | 51 | Open |
| 19 | 2020-11-29 | 51st National Congress | ICC INT | 9 | Sergei Azarov | Derek Clasby | 1-0 | 50 | Open |
| 20 | 2020-11-29 | 51st National Congress | ICC INT | 8 | Derek Clasby | Aleksandr Lenderman | 1/2-1/2 | 73 | Open |
| 21 | 2020-11-29 | 51st National Congress | ICC INT | 7 | Eugene Hua | Derek Clasby | 1/2-1/2 | 67 | Open |
| 22 | 2020-11-28 | 51st National Congress | ICC INT | 6 | Sathvik Singireddy | Derek Clasby | 0-1 | 31 | Open |
| 23 | 2020-11-28 | 51st National Congress | ICC INT | 5 | Derek Clasby | Sandeep Sethuraman | 1/2-1/2 | 120 | Open |
| 24 | 2020-11-28 | 51st National Congress | ICC INT | 4 | Illya Nyzhnyk | Derek Clasby | 1-0 | 40 | Open |
| 25 | 2020-11-27 | 51st National Congress | ICC INT | 3 | Derek Clasby | Samuel Zhang | 1-0 | 27 | Open |
| 26 | 2020-11-27 | 51st National Congress | ICC INT | 2 | Gadir Guseinov | Derek Clasby | 1/2-1/2 | 77 | Open |
| 27 | 2020-11-27 | 51st National Congress | ICC INT | 1 | Derek Clasby | Thomas Li | 1-0 | 40 | Open |
| 28 | 2018-07-08 | 46th Annual World Open | Philadelphia USA | 8 | Derek Clasby | Hairan Liang | 0-1 | 34 | Open |
| 29 | 2018-05-27 | Cherry Blossom Classic | Dulles USA | 4.5 | Derek Clasby | Sabina-Francesca Foisor | 0-1 | 46 | Open |
| 30 | 2018-05-26 | Cherry Blossom Classic | Dulles USA | 2.3 | Derek Clasby | Jesse Kraai | 0-1 | 29 | Open |
| 31 | 2017-12-30 | 44th Eastern Open 2017 | Tysons USA | 6.12 | Derek Clasby | Abhimanyu Banerjee | 1-0 | 49 | Open |
| 32 | 2017-12-27 | 44th Eastern Open 2017 | Tysons USA | 1.5 | Sahil Sinha | Derek Clasby | 1-0 | 55 | Open |
| 33 | 2016-12-30 | 43rd Eastern Open 2016 | Bethesda USA | 7.12 | Pranav Prem | Derek Clasby | 0-1 | 36 | Open |
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