Stadium: V5 Round: 26 Ground: Hardcourt outdoor
| Denver, Singles Qualifying W-ITF-USA-28A | 2019/06/20 17:50 | Whittle, Sophia v Chieh-Yu Hsu | 6-1,6-2 |
| ITF W25 Fort Worth | 2019/07/31 21:55 | Contreras Gomez, Fernanda v Whittle, Sophia | 4-6,0-6 |
| Honolulu, Simples W-ITF-USA-20A | 2019/07/11 00:00 | Whittle, Sophia v Gibbs, Nicole | 6-7,6-4,3-6 |
| Honolulu, Simples W-ITF-USA-20A | 2019/07/09 23:10 | Katie Volynets v Whittle, Sophia | 7-5,1-6,7-10 |
| Honolulu, Simples W-ITF-USA-20A | 2019/07/08 23:30 | Whittle, Sophia v Ghitescu, Andreea | 6-0,6-1 |
| ITF W15 Cancun | 2019/06/27 15:05 | Whittle, Sophia v Jessica Failla | 6-0,2-6,6-7 |
| ITF W15 Cancun | 2019/06/26 13:30 | Tiphanie Lemaitre v Whittle, Sophia | 6-7,2-6 |
| ITF W15 Cancun | 2019/06/24 14:30 | Bernard, Caitlin v Whittle, Sophia | 2-6,2-6 |
| Denver, Singles Qualifying W-ITF-USA-28A | 2019/06/22 15:00 | Usue Maitane Arconada v Whittle, Sophia | 7-5,6-1 |
| ITF W25 Fort Worth | 2019/07/31 14:55 | Rhiann Newborn v Chieh-Yu Hsu | 1-6,2-6 |
| ITF W25 Evansville | 2019/07/24 14:00 | Fahey, Katharine v Chieh-Yu Hsu | 4-6,7-5,7-5 |
| Gatineau, Singles W-ITF-CAN-04A | 2019/07/18 15:30 | Susan Bandecchi v Chieh-Yu Hsu | 6-2,6-7,6-2 |
| Gatineau, Singles W-ITF-CAN-04A | 2019/07/16 16:35 | Nagi Hanatani v Chieh-Yu Hsu | 3-6,1-6 |
| ITF W25 Saskatoon | 2019/07/10 19:05 | Chieh-Yu Hsu v Maddison Inglis | 3-6,2-6 |
| Shreveport, Singles Qualifying W-ITF-USA-19A | 2019/06/30 15:30 | Alycia Parks v Chieh-Yu Hsu | 2-6,3-6 |
| Shreveport, Singles Qualifying W-ITF-USA-19A | 2019/06/29 18:30 | Chieh-Yu Hsu v Elie, Jennifer | 5-7,7-6,6-2 |
| Shreveport, Singles Qualifying W-ITF-USA-19A | 2019/06/28 15:30 | Peyton Stearns v Chieh-Yu Hsu | 4-6,2-6 |