Derek Clasby

Country

USA

Birth Year

2006

Gender

M

Title

FIDE Master

FIDE ID

30932300

USCF ID

15194211

USCF Rating

2427

FIDE ratings

2330

Classical

Published FIDE

—

Rapid

Published FIDE

2152

Blitz

Published FIDE

Official classical ranks

World rank
#3201
National rank · USA
#145

Active players · Oct 2026 FIDE list ⓘ

Rating history

Highest recorded rating
2343 Aug 2024
Recorded years
2016–2026
Archived games
60

Based on available monthly lists and saved games.

FIDE rating history

Published rating lists through Oct 2026.

View rating lists

USCF rating history

Published rating lists through Oct 2026.

View rating lists
Available Games

Published games available in our archive; coverage varies by tournament. Archive last checked: 2026-10-04 (UTC).

# 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 2022-06-21 Titled Tue 21st Jun Early chess.com INT 5 Derek Clasby Bharath Subramaniyam H 0-1 34 Open
20 2022-06-21 Titled Tue 21st Jun Early chess.com INT 4 Aksel Bu Kvaloy Derek Clasby 0-1 52 Open
21 2022-06-21 Titled Tue 21st Jun Early chess.com INT 3 Derek Clasby Marek Karas 1-0 38 Open
22 2022-06-21 Titled Tue 21st Jun Early chess.com INT 2 Renato Terry Derek Clasby 1-0 71 Open
23 2022-06-21 Titled Tue 21st Jun Early chess.com INT 1 Derek Clasby Kamil Warchol 1-0 49 Open
24 2021-03-23 Titled Tuesday 23rd Mar chess.com INT 3 Aron Pasti Derek Clasby 1-0 74 Open
25 2021-03-23 Titled Tuesday 23rd Mar chess.com INT 2 Derek Clasby Murali Karthikeyan 0-1 44 Open
26 2021-03-23 Titled Tuesday 23rd Mar chess.com INT 1 Paulina Cagara Derek Clasby 0-1 16 Open
27 2020-11-29 51st National Congress ICC INT 9 Sergei Azarov Derek Clasby 1-0 50 Open
28 2020-11-29 51st National Congress ICC INT 8 Derek Clasby Aleksandr Lenderman 1/2-1/2 73 Open
29 2020-11-29 51st National Congress ICC INT 7 Eugene Hua Derek Clasby 1/2-1/2 67 Open
30 2020-11-28 51st National Congress ICC INT 6 Sathvik Singireddy Derek Clasby 0-1 31 Open
31 2020-11-28 51st National Congress ICC INT 5 Derek Clasby Sandeep Sethuraman 1/2-1/2 120 Open
32 2020-11-28 51st National Congress ICC INT 4 Illya Nyzhnyk Derek Clasby 1-0 40 Open
33 2020-11-27 51st National Congress ICC INT 3 Derek Clasby Samuel Zhang 1-0 27 Open
34 2020-11-27 51st National Congress ICC INT 2 Gadir Guseinov Derek Clasby 1/2-1/2 77 Open
35 2020-11-27 51st National Congress ICC INT 1 Derek Clasby Thomas Li 1-0 40 Open
36 2020-07-21 Titled Tuesday 21st July chess.com INT 9 Leonardo Valdes Romero Derek Clasby 1-0 44 Open
37 2020-07-21 Titled Tuesday 21st July chess.com INT 8 Derek Clasby Harsha Bharathakoti 0-1 25 Open
38 2020-07-21 Titled Tuesday 21st July chess.com INT 7 Derek Clasby Mahel Boyer 1-0 53 Open
39 2020-07-21 Titled Tuesday 21st July chess.com INT 6 Benjamin Bok Derek Clasby 1-0 25 Open
40 2020-07-21 Titled Tuesday 21st July chess.com INT 5 Dragan Popadic Derek Clasby 0-1 52 Open
41 2020-07-21 Titled Tuesday 21st July chess.com INT 4 Derek Clasby Vasil Trickov 1-0 31 Open
42 2020-07-21 Titled Tuesday 21st July chess.com INT 3 Giga Quparadze Derek Clasby 1-0 57 Open
43 2020-07-21 Titled Tuesday 21st July chess.com INT 1 Adriana Sakorenko Derek Clasby 1/2-1/2 69 Open
44 2020-07-21 Titled Tuesday 21st July chess.com INT 10 Derek Clasby Erick Zhao 1-0 49 Open
45 2020-05-16 PNWCC Online Blitz JP 10 chess.com INT 9 Derek Clasby Zachary Tanenbaum 1-0 27 Open
46 2020-05-16 PNWCC Online Blitz JP 10 chess.com INT 8 Ethan Modi Derek Clasby 0-1 24 Open
47 2020-05-16 PNWCC Online Blitz JP 10 chess.com INT 7 Adrian Kondakov Derek Clasby 0-1 48 Open
48 2020-05-16 PNWCC Online Blitz JP 10 chess.com INT 6 Derek Clasby Daniel Fridman 0-1 45 Open
49 2020-05-16 PNWCC Online Blitz JP 10 chess.com INT 5 Isik Can Derek Clasby 1-0 51 Open
50 2020-05-16 PNWCC Online Blitz JP 10 chess.com INT 3 Derek Clasby Yuriy Kuzubov 0-1 47 Open

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