Challenger Yokkaichi 11/25 01:30 27 [235] Nicholas D Ionel v James Duckworth [172] 6-4,3-6,3-6
Challenger Yokkaichi 11/24 01:30 26 [301] Filip C Jianu v James Duckworth [172] 7-6,2-6,2-6
Challenger Yokkaichi 11/22 04:45 25 [443] Makoto Ochi v James Duckworth [172] 6-7,4-6
Challenger Kobe 11/15 07:10 25 James Duckworth v Shinji Hazawa 4-6,4-6
Challenger Sydney 10/31 05:40 25 [361] Mukund Sasikumar v James Duckworth [110] 4-6,6-3,7-6
Challenger Playford 10/28 02:00 27 [192] Rinky Hijikata v James Duckworth [114] 4-6,6-1,6-2
Challenger Playford 10/26 23:30 26 [380] Marek Gengel v James Duckworth [114] 1-6,2-6
Challenger Playford 10/25 06:05 25 [349] Prajnesh Gunneswaran v James Duckworth [114] 5-7,1-6
Challenger Busan 10/18 03:50 25 James Duckworth v Marc Polmans 4-6,6-2,4-6
Challenger Seoul 10/15 07:20 28 [292] Li Tu v James Duckworth [114] 6-4,6-3
Challenger Seoul 10/14 03:40 27 [114] James Duckworth v Maximilian Marterer [162] 4-6,7-6,6-3
Challenger Seoul 10/13 03:35 26 James Duckworth v Hong Chung 7-6,6-1
Challenger Seoul 10/11 07:35 25 [114] James Duckworth v Aleksandar Kovacevic [172] 7-6,6-3
ATP Tokió 10/05 09:55 25 [109] James Duckworth v Taylor Fritz [11] 2-6,7-6,1-6
ATP San Diego 09/23 18:30 27 [58] Marcos Giron v James Duckworth [83] 7-6,6-3
ATP San Diego 09/22 00:35 26 [228] Mitchell Krueger v James Duckworth [83] 3-6,6-7
ATP San Diego 09/19 18:30 25 [90] Alexei Popyrin v James Duckworth [83] 5-7,6-4,1-6
Challenger Istanbul 09/13 12:15 25 [70] James Duckworth v Lukas Rosol [305] 2-6,6-7
Challenger Cassis 09/11 12:00 29 [119] Hugo Grenier v James Duckworth [83] 7-5,6-4
Challenger Cassis 09/10 12:00 28 [126] Tomas Machac v James Duckworth [83] 3-6,4-6
Challenger Cassis 09/09 08:30 27 [176] Borna Gojo v James Duckworth [83] 3-6,6-3,4-6
Challenger Cassis 09/07 11:05 26 Gabriel Debru v James Duckworth 6-7,4-6
Challenger Cassis 09/06 08:00 25 [194] Antoine Bellier v James Duckworth [83] 4-6,6-2,2-6
US Open 09/01 15:00 24 [83] James Duckworth v Daniel Evans [23] 3-6,2-6,6-4,4-6
US Open 08/30 16:40 23 [83] James Duckworth v Christopher O'Connell [118] 4-6,7-6,6-2,6-3
ATP Winston-Salem 08/23 20:00 25 [84] James Duckworth v Maxime Cressy [34] 3-6,3-6
ATP Winston-Salem 08/22 18:00 24 [70] Thanasi Kokkinakis v James Duckworth [84] 6-4,3-6,6-7
ATP Montreal 08/06 16:20 14 James Duckworth v Gabriel Diallo 3-6,6-7
ATP Washington 08/01 18:35 24 [59] James Duckworth v Borna Gojo [198] 6-4,6-7,2-6
ATP Atlanta 07/28 23:00 26 [30] Alex De Minaur v James Duckworth [62] 6-4,6-4

James Duckworth (born 21 January 1992) is an Australian professional tennis player. He has a career-high ATP singles ranking of World No. 46 achieved on 31 January 2022 and No. 185 in doubles achieved on 10 February 2020. Duckworth represented Australia in tennis at the 2020 Tokyo Olympics and the 2022 ATP Cup.

As a junior, Duckworth enjoyed a successful career which included winning three titles and reaching the semifinals of the 2010 French Open.