Joshua Posthuma

Country

USA

Birth Year

2000

Gender

M

Title

International Master

FIDE ID

2096889

USCF ID

13856778

USCF Rating

2465

FIDE ratings

2372

Classical

Published FIDE

2439

Rapid

Published FIDE

2318

Blitz

Published FIDE

Official classical ranks

World rank
#2224
National rank · USA
#109

Active players · Oct 2026 FIDE list ⓘ

Rating history

Highest recorded rating
2457 Apr 2023
Recorded years
2015–2026
Archived games
285

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: 2026-10-07 (UTC).

# Date Event Site Round White Black Result Moves View
101 2023-05-27 32nd Chicago Open 2023 Chicago USA 5 Joshua Posthuma Tanitoluwa Adewumi 1/2-1/2 55 Open
102 2023-05-27 32nd Chicago Open 2023 Chicago USA 4 Dachey Lin Joshua Posthuma 1/2-1/2 69 Open
103 2023-03-17 Excelsior March GM 2023 Toronto CAN 9.5 Anthony Atanasov Joshua Posthuma 1/2-1/2 65 Open
104 2023-03-16 Excelsior March GM 2023 Toronto CAN 8.3 Joshua Posthuma Gabor Nagy 1-0 43 Open
105 2023-03-16 Excelsior March GM 2023 Toronto CAN 7.2 Mark Plotkin Joshua Posthuma 0-1 26 Open
106 2023-03-15 Excelsior March GM 2023 Toronto CAN 6.5 Joshua Posthuma Mike Ivanov 1/2-1/2 50 Open
107 2023-03-15 Excelsior March GM 2023 Toronto CAN 5.4 Luis Fernando Ibarra Chami Joshua Posthuma 1/2-1/2 38 Open
108 2023-03-14 Excelsior March GM 2023 Toronto CAN 4.3 Joshua Posthuma Zachary Dukic 1-0 43 Open
109 2023-03-14 Excelsior March GM 2023 Toronto CAN 3.2 Nikolay Noritsyn Joshua Posthuma 1/2-1/2 54 Open
110 2023-03-13 Excelsior March GM 2023 Toronto CAN 2.1 Joshua Posthuma Bator Sambuev 1-0 65 Open
111 2023-03-13 Excelsior March GM 2023 Toronto CAN 1.1 Victor Mikhalevski Joshua Posthuma 1/2-1/2 62 Open
112 2022-05-30 31st Chicago Open 2022 Chicago USA 9 Joshua Posthuma Mikhail Al. Antipov 1/2-1/2 16 Open
113 2022-05-30 31st Chicago Open 2022 Chicago USA 8 Joshua Posthuma Tatev Abrahamyan 1-0 38 Open
114 2022-05-29 31st Chicago Open 2022 Chicago USA 7 Christopher Shen Joshua Posthuma 1/2-1/2 43 Open
115 2022-05-29 31st Chicago Open 2022 Chicago USA 6 Joshua Posthuma Emilio Cordova 0-1 37 Open
116 2022-05-28 31st Chicago Open 2022 Chicago USA 5 James Canty Joshua Posthuma 0-1 35 Open
117 2022-05-28 31st Chicago Open 2022 Chicago USA 4 Joshua Posthuma Tanitoluwa Adewumi 1/2-1/2 94 Open
118 2022-05-27 31st Chicago Open 2022 Chicago USA 3 Timur Gareyev Joshua Posthuma 1-0 30 Open
119 2022-05-27 31st Chicago Open 2022 Chicago USA 2 Joshua Posthuma Ryo Chen 1-0 42 Open
120 2022-05-24 Saint Louis Congress IM Saint Louis USA 9.1 Aaron Grabinsky Joshua Posthuma 1/2-1/2 68 Open
121 2022-05-23 Saint Louis Congress IM Saint Louis USA 8.1 Joshua Posthuma Gabriela Antova 1-0 41 Open
122 2022-05-22 Saint Louis Congress IM Saint Louis USA 7.1 Matyas Marek Joshua Posthuma 1/2-1/2 4 Open
123 2022-05-22 Saint Louis Congress IM Saint Louis USA 6.1 Joshua Posthuma Ezra Paul Chambers 1-0 62 Open
124 2022-05-21 Saint Louis Congress IM Saint Louis USA 5.1 Jennifer Yu Joshua Posthuma 0-1 39 Open
125 2022-05-21 Saint Louis Congress IM Saint Louis USA 4.1 Joshua Posthuma Pedro Rodriguez Rivera 1-0 52 Open
126 2022-05-20 Saint Louis Congress IM Saint Louis USA 3.1 Alice Lee Joshua Posthuma 1/2-1/2 91 Open
127 2022-05-20 Saint Louis Congress IM Saint Louis USA 2.1 Joshua Posthuma Julian Proleiko 1-0 54 Open
128 2022-05-19 Saint Louis Congress IM Saint Louis USA 1.1 Gulrukhbegim Tokhirjonova Joshua Posthuma 1/2-1/2 57 Open
129 2022-03-29 Titled Tue 29th Mar Early chess.com INT 9 Dejan Tasev Joshua Posthuma 1-0 50 Open
130 2022-03-29 Titled Tue 29th Mar Early chess.com INT 8 Joshua Posthuma Fabiano Caruana 0-1 36 Open
131 2022-03-29 Titled Tue 29th Mar Early chess.com INT 7 Qi b Chen Joshua Posthuma 0-1 27 Open
132 2022-03-29 Titled Tue 29th Mar Early chess.com INT 6 Joshua Posthuma Chithambaram VR. Aravindh 0-1 34 Open
133 2022-03-29 Titled Tue 29th Mar Early chess.com INT 5 Abtin Atakhan Joshua Posthuma 0-1 40 Open
134 2022-03-29 Titled Tue 29th Mar Early chess.com INT 4 Joshua Posthuma Alexander Reprintsev 1-0 62 Open
135 2022-03-29 Titled Tue 29th Mar Early chess.com INT 3 Joshua Posthuma Vladimir Demin 1-0 20 Open
136 2022-03-29 Titled Tue 29th Mar Early chess.com INT 2 Jyrki Kiltti Joshua Posthuma 0-1 32 Open
137 2022-03-29 Titled Tue 29th Mar Early chess.com INT 11 Koosha Jaferian Joshua Posthuma 0-1 52 Open
138 2022-03-29 Titled Tue 29th Mar Early chess.com INT 10 Joshua Posthuma Ivan Zemlyanskii 1-0 35 Open
139 2022-03-20 Charlotte Spring IMC 2022 Charlotte USA 9.1 Joshua Posthuma Ruiyang Yan 1/2-1/2 13 Open
140 2022-03-20 Charlotte Spring IMC 2022 Charlotte USA 8.5 Mike Ivanov Joshua Posthuma 0-1 56 Open
141 2022-03-19 Charlotte Spring IMC 2022 Charlotte USA 7.2 Joshua Posthuma Roberto Abel Martin Del Campo Cardenas 1/2-1/2 70 Open
142 2022-03-19 Charlotte Spring IMC 2022 Charlotte USA 6.4 Brewington Hardaway Joshua Posthuma 0-1 45 Open
143 2022-03-18 Charlotte Spring IMC 2022 Charlotte USA 5.3 Joshua Posthuma James Canty 1-0 53 Open
144 2022-03-18 Charlotte Spring IMC 2022 Charlotte USA 4.3 Vishnu Vanapalli Joshua Posthuma 0-1 56 Open
145 2022-03-17 Charlotte Spring IMC 2022 Charlotte USA 3.4 Joshua Posthuma Oladapo ADU 1/2-1/2 67 Open
146 2022-03-17 Charlotte Spring IMC 2022 Charlotte USA 2.2 Nikolai Andrianov Joshua Posthuma 1/2-1/2 60 Open
147 2022-03-16 Charlotte Spring IMC 2022 Charlotte USA 1.5 Joshua Posthuma Nicolas De La Colina 1-0 52 Open
148 2022-01-17 CCCSA Winter GMA 2022 Charlotte USA 9.2 Joshua Posthuma Guillermo Vazquez 1/2-1/2 19 Open
149 2022-01-17 CCCSA Winter GMA 2022 Charlotte USA 8.4 Craig Hilby Joshua Posthuma 1/2-1/2 30 Open
150 2022-01-16 CCCSA Winter GMA 2022 Charlotte USA 7.3 Joshua Posthuma Rohan Talukdar 1-0 26 Open

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