| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2018 | 2/9 | 1/6 | 1/3 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2017 | 3/10 | 3/10 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2016 | 6/27 | 0/9 | 6/15 | 0/0 | 0/3 | 0/0 | 0/0 |
| 2015 | 5/20 | 4/13 | 1/7 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 16/66 | 8/38 | 8/25 | 0/0 | 0/3 | 0/0 | 0/0 |
| perc. % | 19.51 % | 17.39 % | 24.24 % | 0 % | 0 % | 0 % | 0 % |
Yifei Yang / scheduled / last
| no matches found |
Yifei Yang form / year 2017
Yifei Yang / year 2017
| 09.10.17 | q 2 | Yifei Yang | Roong Sirinuntavitaya | 4-6, 6-4, 6-3 |  | match details |  Nonthaburi | Hard |
| 09.10.17 | qual. | Sina Zuger | Yifei Yang | 6-1, 6-1 |  | match details | ||
| 02.10.17 | q 1 | Ashmitha Easwaramurthi | Yifei Yang | 6-1, 7-61 | | match details | Nonthaburi | Hard |
| 04.09.17 | q 1 | Yubean Lee | Yifei Yang | 6-3, 7-66 | | match details |  Yeongwol | Hard |
| 28.08.17 | q 1 | Ji Hey Lee | Yifei Yang | 6-1, 2-6, 6-2 | | match details | Yeongwol | Hard |
| 14.08.17 | q 1 | Lauren Marker | Yifei Yang | 6-2, 6-2 | | match details | Nonthaburi | Hard |
| 07.08.17 | q 1 | Chompoothip Jandakate | Yifei Yang | 6-2, 6-0 | | match details | Nonthaburi | Hard |
| 31.07.17 | q 1 | Chin-Wei Chan | Yifei Yang | 6-4, 6-2 | | match details | Nonthaburi | Hard |
| 24.07.17 | q 1 | Yifei Yang | Thitirat Kanaphuet | 7-67, 6-1 | | match details | Hua Hin | Hard |
| 24.07.17 | q 2 | Alexandra Bozovic | Yifei Yang | 6-4, 6-0 | | match details | ||
| 17.07.17 | q 1 | Georgiana Ruhrig | Yifei Yang | 6-2, 6-3 | | match details | Hua Hin | Hard |
| 10.07.17 | q 2 | Sari Baba | Yifei Yang | 6-4, 6-1 | | match details | Hua Hin | Hard |
| 10.07.17 | q 1 | Yifei Yang | Niditra Rajmohan | 7-5, 6-2 | | match details |
