Challenger Girona 03/26 13:00 25 [151] Jesper De Jong v Jan Choinski [169] 6-3,6-3
Challenger Murcia 03/18 16:35 25 [152] Pablo Llamas Ruiz v Jan Choinski [169] 7-6,7-6
Challenger Hamburg 03/11 14:30 25 [172] Jan Choinski v Yasutaka Uchiyama [245] 4-6,6-7
Challenger Lugano 03/07 13:15 26 [172] Jan Choinski v Rudolf Molleker [187] 6-7,4-6
Challenger Lugano 03/06 09:00 25 [172] Jan Choinski v Coleman Wong [215] 3-6,6-3,6-4
Challenger Lille 02/27 09:30 25 [164] Giovanni Mpetshi Perricard v Jan Choinski [157] 6-3,1-6,6-1
Challenger Pau 02/21 18:20 25 [112] Benoit Paire v Jan Choinski [157] 6-4,6-2
Challenger Cherbourg 02/13 19:05 25 [280] Tristan Lamasine v Jan Choinski [157] 6-4,3-6,7-6
Challenger Nottingham 02/07 15:15 25 [161] Jan Choinski v Dimitar Kuzmanov [225] 4-6,6-1,3-6
Challenger Koblenz 01/31 13:00 25 Jan Choinski v Stefano Travaglia Cancelled
Challenger Ottignies 01/26 13:30 27 [127] Brandon Nakashima v Jan Choinski [162] 6-1,6-7,7-5
Challenger Ottignies 01/25 09:00 26 [162] Jan Choinski v Adrian Andreev [263] 7-6,6-1
Challenger Ottignies 01/23 17:55 25 [169] Antoine Escoffier v Jan Choinski [162] 3-6,6-7
Australian Open 01/10 00:55 14 [163] Jan Choinski v Benjamin Hassan [150] 4-6,0-6
ATP Hong Kong 01/01 04:00 19 [75] Taro Daniel v Jan Choinski [160] 6-4,3-6,6-4
ATP Hong Kong 12/31 04:00 14 [160] Jan Choinski v Zizou Bergs [129] 6-2,6-2
Challenger Danderyd 11/14 17:20 25 [154] Jan Choinski v Brandon Nakashima [143] 4-6,2-6
ATP Metz 11/04 10:00 14 [152] Jan Choinski v Mathias Bourgue [279] 6-7,7-6,2-6
Challenger Ismaning 10/30 15:55 25 [268] Alibek Kachmazov v Jan Choinski [152] 6-4,5-7,6-2
Challenger Santa Fe 10/16 17:30 25 [169] Andrea Pellegrino v Jan Choinski [150] Retired
Challenger Buenos Aires 10/13 17:45 27 [83] Federico Coria v Jan Choinski [127] 5-7,7-6,6-3
Challenger Buenos Aires 10/12 15:30 26 [137] Hugo Dellien v Jan Choinski [127] Retired
Challenger Buenos Aires 10/10 18:00 25 [150] Thiago Monteiro v Jan Choinski [127] 3-6,6-1,3-6
Challenger Campinas 10/04 14:00 26 [190] Andrea Pellegrino v Jan Choinski [128] 6-4,3-6,6-3
Challenger Campinas 10/02 20:00 25 [281] Joao Lucas Reis da Silva v Jan Choinski [128] 6-4,2-6,1-6
Challenger Braga 09/25 14:30 25 [134] Jan Choinski v Duje Ajdukovic [207] 6-1,3-6,3-6
Challenger Bad Waltersdorf 09/22 11:00 27 [134] Jan Choinski v Dennis Novak [253] 1-6,0-6
Challenger Bad Waltersdorf 09/20 08:00 26 [134] Jan Choinski v Zdenek Kolar [171] 2-6,6-3,7-5
Challenger Bad Waltersdorf 09/18 13:15 25 [118] Pedro Martinez v Jan Choinski [134] 5-7,4-6
Challenger Szczecin 09/12 10:20 25 [128] Jan Choinski v Vit Kopriva [148] 2-6,3-6

Wikipedia - Jan Choinski

Jan Choinski (Polish: Choiński; born 10 June 1996 in Germany) is a Polish-German-British tennis player. Choinski has a career high ATP singles ranking of world No. 126, achieved on 21 August 2023. He represented Germany from the beginning of his career until the end of 2018 and then switched to Great Britain.