ChessmooseOpponent prep

FMDerek Clasby

USA · FIDE ID 30932300 · 20 tournament games since 2022
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Standard
2330
#145 in USA (active)
Rapid
–
Unrated
Blitz
2152
#234 in USA (active)
Score
40%
5 W · 6 D · 9 L
Opp. avg
2352
Last 20 games
Last game
2026-07-05
54th annual World Open - 2026

Prep summary

Based on 20 over-the-board games (5 classical). 12 with White (50%), 8 with Black (25%).

Openings as White

First move

1.e41250%

Most played

OpeningGamesScore
Ruy Lopez: Closed225%
Sicilian Defense: Chekhover Variation1100%
Ruy Lopez: Morphy Defense, Møller Variation150%
Italian Game: Giuoco Pianissimo, Italian Four Knights Variation1100%
Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation1100%

Openings as Black

Against 1.e4 (1 game)

1...e5 King's Pawn Game10%

Against 1.d4 (4 games)

1...Nf6 Indian Defense425%

Most played

OpeningGamesScore
Nimzo-Indian Defense: Normal Variation, Botvinnik System150%
Ruy Lopez: Closed10%
Nimzo-Indian Defense: Classical Variation, Noa Variation10%
English Opening: Symmetrical Variation, Fianchetto Variation10%
Grünfeld Defense: Exchange Variation, Modern Exchange Variation10%

Recent games

DateOpponent and eventResult
2026-07-05Tim Shvarts (1990)
54th annual World Open - 2026 · classical
½
2026-07-05Tal Baron (2410)
54th annual World Open - 2026 · classical
½
2026-07-04Haowen Xue (2553)
54th annual World Open - 2026 · classical
L
2026-07-03Avi Harrison Kaplan (2251)
54th annual World Open - 2026 · classical
W
2026-07-02Vihaan Jammalamadaka (2109)
54th annual World Open - 2026 · classical
L
2025-07-03Jeffery Xiong (2646)
53rd Annual World Open 2025
L
2024-07-06Arystanbek Urazayev (2476)
CCA World Open 2024
½
2024-07-05Theodore Slade (2109)
CCA World Open 2024
W
2024-07-04Vasif Durarbayli (2628)
CCA World Open 2024
L
2023-08-16Pedro Espinosa
10th Annual Washington International 2023
W

Data: FIDE rating list (October 2026 list; national ranks count active players) and tournament games broadcast on Lichess since 2020 (open data, CC0). Results are matched to FIDE players by name or FIDE ID and may be incomplete. This page shows public chess results only. Is this you and you want the page removed? Email chessmoose1@gmail.com and we remove it.