| Olympics 2020 - Men | 07/25 03:25 | 24 | Alexander Zverev v Yen-Hsun Lu | 6-1,6-3 | |
| Wimbledon | 06/29 17:10 | 23 | Marc Polmans v Yen-Hsun Lu | 6-2,7-5,4-6,6-1 | |
| ATP Queens | 06/15 16:00 | 25 | Yen-Hsun Lu v Fabio Fognini | 4-6,6-7 | |
| French Open | 06/01 14:25 | 23 | Diego Schwartzman v Yen-Hsun Lu | 6-2,6-2,6-3 | |
| ATP Miami | 03/26 18:55 | 24 | Daniil Medvedev v Yen-Hsun Lu | 6-2,6-2 | |
| ATP Miami | 03/24 16:40 | 23 | Sam Querrey v Yen-Hsun Lu | 3-6,4-6 | |
| Australian Open | 02/08 00:00 | 23 | Reilly Opelka v Yen-Hsun Lu | 6-3,7-6,6-3 | |
| ATP Great Ocean Road Open | 01/31 23:30 | 24 | Yen-Hsun Lu v Aleksandar Vukic | 4-6,5-7 | |
| ATP Dubai | 02/25 10:00 | 25 | Yen-Hsun Lu v Yasutaka Uchiyama | 6-3,1-6,2-6 | |
| Australian Open | 01/21 08:25 | 23 | Gael Monfils v Yen-Hsun Lu | 6-1,6-4,6-2 | |
| French Open | 05/28 09:00 | - | Yuki Bhambri v Yen-Hsun Lu | Cancelled | |
| Challenger Busan | 05/15 04:25 | 25 | [108] Yen-Hsun Lu v Yosuke Watanuki [347] | 1-6,2-6 | |
| Challenger Gimcheon | 05/08 06:55 | - | Duckhee Lee v Yen-Hsun Lu | Cancelled | |
| Challenger Seoul | 05/03 01:30 | 26 | [232] Lloyd Harris v Yen-Hsun Lu [109] | Retired | |
| Challenger Seoul | 04/30 04:55 | 25 | [347] Maverick Banes v Yen-Hsun Lu [109] | 4-6,1-6 | |
| Challenger Ningbo | 10/21 05:00 | 28 | [60] Yen-Hsun Lu v Taro Daniel [119] | Retired | |
| Challenger Ningbo | 10/20 05:25 | 27 | [60] Yen-Hsun Lu v Peter Polansky [130] | 6-2,6-3 | |
| Challenger Ningbo | 10/18 03:00 | 26 | [60] Yen-Hsun Lu v Tatsuma Ito [154] | 6-2,6-3 | |
| Challenger Ningbo | 10/16 06:00 | 25 | [61] Yen-Hsun Lu v Go Soeda [143] | 6-3,4-6,6-4 | |
| ATP Shanghai Qual | 10/08 04:00 | 46 | [63] Yen-Hsun Lu v Stefanos Tsitsipas [115] | 7-5,6-7,4-6 | |
| ATP Shanghai Qual | 10/07 05:30 | 45 | Yen-Hsun Lu v Rigele Te | 7-5,6-3 | |
| ATP Tokyo | 10/05 04:25 | 26 | [30] Richard Gasquet v Yen-Hsun Lu [63] | 6-0,7-6 | |
| ATP Tokyo | 10/03 07:30 | 25 | [116] Taro Daniel v Yen-Hsun Lu [63] | 1-6,3-6 | |
| ATP Chengdu | 09/29 12:50 | 27 | [63] Yen-Hsun Lu v Marcos Baghdatis [113] | 3-6,2-6 | |
| ATP Chengdu | 09/28 05:00 | 26 | [37] Andrey Rublev v Yen-Hsun Lu [63] | 2-6,1-6 | |
| ATP Chengdu | 09/26 05:00 | 25 | [63] Yen-Hsun Lu v Mikael Ymer [328] | 6-2,6-3 | |
| Challenger Shanghai | 09/17 04:50 | 29 | [62] Yen-Hsun Lu v Yibing Wu [496] | Retired | |
| Challenger Shanghai | 09/16 03:00 | 28 | [62] Yen-Hsun Lu v Ze Zhang [234] | 6-1,6-2 | |
| Challenger Shanghai | 09/15 02:30 | 27 | [62] Yen-Hsun Lu v Mohamed Safwat [211] | 6-2,7-5 | |
| Challenger Shanghai | 09/13 02:30 | 26 | [62] Yen-Hsun Lu v Luke Saville [375] | 6-4,6-4 |