11‑Nov‑2019 | M15 Sharm El Sheikh | Hard | R16 | 863 | 437 | (2)Laurynas Grigelis [LTU] d. Yu | 6-2 6-2 | | | | | | | | | |
11‑Nov‑2019 | M15 Sharm El Sheikh | Hard | R32 | 863 | | Yu d. (WC)Amr Asrawy [EGY] | 6-2 7-5 | | | | | | | | | |
4‑Nov‑2019 | M15 Sharm El Sheikh | Hard | R32 | 781 | 1436 | (Q)Oleksandr Ovcharenko [UKR] d. Yu | 6-1 7-6(6) | | | | | | | | | |
28‑Oct‑2019 | M15 Sharm El Sheikh | Hard | R16 | 784 | 397 | Julian Ocleppo [ITA] d. Yu | 6-2 6-3 | | | | | | | | | |
28‑Oct‑2019 | M15 Sharm El Sheikh | Hard | R32 | 784 | | Yu d. (WC)Piotr Galus [POL] | 6-2 6-4 | | | | | | | | | |
16‑Sep‑2019 | Kaohsiung CH | Hard | R64 | 757 | 300 | Ji Sung Nam [KOR] d. (WC)Yu | 4-6 6-2 3-1 RET | | 0.68 | 2.7% | 1.4% | 58.1% | 67.4% | 45.2% | 9/12 | 1:22 |
2‑Sep‑2019 | M15 Hua Hin | Hard | R16 | 779 | 1090 | Nitin Kumar Sinha [IND] d. Yu | 3-6 6-4 5-2 RET | | | | | | | | | |
2‑Sep‑2019 | M15 Hua Hin | Hard | R32 | 779 | 528 | Yu d. (3)Yu Hsiou Hsu [TPE] | 7-6(4) 6-3 | | | | | | | | | |
26‑Aug‑2019 | M15 Hua Hin | Hard | R32 | 779 | 598 | Kuan Yi Lee [TPE] d. Yu | 2-6 6-2 7-6(6) | | | | | | | | | |
19‑Aug‑2019 | M15 Jakarta | Hard | R32 | 772 | 468 | Renta Tokuda [JPN] d. Yu | 4-6 6-3 6-4 | | | | | | | | | |
22‑Jul‑2019 | M25 Taipei | Hard | R16 | | 368 | (3)Yan Bai [CHN] d. Yu | 6-1 RET | | | | | | | | | |
22‑Jul‑2019 | M25 Taipei | Hard | R32 | | | Yu d. Sora Fukuda [JPN] | 6-3 5-7 6-4 | | | | | | | | | |
15‑Jul‑2019 | M25 Taipei | Hard | SF | | 645 | Yu Hsiou Hsu [TPE] d. Yu | 7-5 6-2 | | | | | | | | | |
15‑Jul‑2019 | M25 Taipei | Hard | QF | | | Yu d. (Q)Jesse Delaney [AUS] | 6-0 6-3 | | | | | | | | | |
15‑Jul‑2019 | M25 Taipei | Hard | R16 | | 393 | Yu d. (4)Yusuke Takahashi [JPN] | 7-5 6-2 | | | | | | | | | |
15‑Jul‑2019 | M25 Taipei | Hard | R32 | | | Yu d. Jonathan Mridha [SWE] | 6-2 6-1 | | | | | | | | | |
10‑Jun‑2019 | M25 Shenzhen | Hard | R16 | | | (6)Luca Castelnuovo [SUI] d. Yu | 6-1 6-1 | | | | | | | | | |
10‑Jun‑2019 | M25 Shenzhen | Hard | R32 | | | Yu d. Boris Butulija [SRB] | 3-6 6-4 7-6(5) | | | | | | | | | |
3‑Jun‑2019 | M25 Hong Kong | Hard | R32 | | 463 | (7)Yuta Shimizu [JPN] d. Yu | 6-2 6-1 | | | | | | | | | |
27‑May‑2019 | M25 Luzhou | Hard | QF | | 372 | (2)Yan Bai [CHN] d. Yu | 6-4 6-1 | | | | | | | | | |
27‑May‑2019 | M25 Luzhou | Hard | R16 | | | Yu d. Rhett Purcell [GBR] | 6-3 6-3 | | | | | | | | | |
27‑May‑2019 | M25 Luzhou | Hard | R32 | | | Yu d. Aoran Wang [CHN] | 6-1 6-4 | | | | | | | | | |
13‑May‑2019 | M25 Luan | Hard | R32 | | 646 | (5)Takuto Niki [JPN] d. Yu | 6-4 3-6 6-3 | | | | | | | | | |
6‑May‑2019 | M25 Wuhan | Hard | R32 | | 646 | (IR )Takuto Niki [JPN] d. Yu | 6-4 6-7(3) 6-3 | | | | | | | | | |
8‑Apr‑2019 | Taipei CH | Hard | R64 | | 309 | Tung Lin Wu [TPE] d. (WC)Yu | 6-4 6-3 | | 0.61 | 11.5% | 1.9% | 67.3% | 68.6% | 58.8% | 1/3 | 0:57 |
25‑Mar‑2019 | M15 Mornington | Clay | R32 | | | Dusty H Boyer [USA] d. Yu | 6-4 6-7(1) 7-6(6) | | | | | | | | | |
18‑Mar‑2019 | M15 Mornington | Clay | R32 | | | Luca Castelnuovo [SUI] d. Yu | 3-6 6-3 6-4 | | | | | | | | | |
4‑Mar‑2019 | M15 Nishi Tama | Hard | R32 | | 490 | Wishaya Trongcharoenchaikul [THA] d. (Q)Yu | 6-4 7-6(3) | | | | | | | | | |