Stadium: Court 21 Round: 26 Ground: Clay
| ITF - M15 Sunrise | 2019/04/10 14:00 | Mantilla, Felipe v Mwendwa Mbithi | 6-2,4-6,6-3 |
| ITF - M25 Pensacola | 2019/05/08 19:55 | Tikhomirov, Maksim v Mwendwa Mbithi | 6-2,4-6,5-7 |
| ITF - M25 Pensacola | 2019/05/07 15:00 | Mwendwa Mbithi v Giddens, Maxwell | 6-2,4-6,10-8 |
| ITF - M25 Pensacola | 2019/05/06 20:00 | Ore, I. A. v Mwendwa Mbithi | 5-7,5-7 |
| Vero Beach, Fl, Singles Qualifying M-ITF-USA-17A | 2019/04/29 16:00 | Mwendwa Mbithi v Newman, Baker | 0-6,4-6 |
| ITF - M15 Orange Park | 2019/04/16 14:00 | Nunez, V. v Mwendwa Mbithi | 6-4,6-2 |
| ITF - M15 Orange Park | 2019/04/15 14:00 | Tavarez Pichardo, Junior v Mwendwa Mbithi | 4-6,1-6 |
| ITF - M15 Sunrise | 2019/04/10 14:00 | Mantilla, Felipe v Mwendwa Mbithi | 6-2,4-6,6-3 |
| ITF USA F32 | 2018/11/10 18:00 | Kelly, Robert v Mwendwa Mbithi | 7-6,6-3 |
| ITF - M25 Pensacola | 2019/05/08 19:10 | Adrian Andreev v Mantilla, Felipe | 4-6,2-6 |
| Puerto Vallarta, Mexico | 2019/04/29 16:00 | Krainik, Pavel v Mantilla, Felipe | 6-3,6-4 |
| Challenger Leon | 2019/04/23 16:00 | Gomez, Lucas v Mantilla, Felipe | 7-6,6-4 |
| Challenger Leon | 2019/04/22 15:00 | Camilo Ugo Carabelli v Mantilla, Felipe | 1-6,6-7 |
| ITF - M15 Orange Park | 2019/04/18 15:00 | Dmitry Popko v Mantilla, Felipe | 6-1,6-3 |
| ITF - M15 Orange Park | 2019/04/16 14:00 | Hamilton, Grey v Mantilla, Felipe | 2-6,4-6 |
| ITF - M15 Sunrise | 2019/04/11 14:00 | Mantilla, Felipe v Galarza, Juan Ignacio | 4-6,6-4,0-6 |
| ITF - M15 Sunrise | 2019/04/10 14:00 | Mantilla, Felipe v Mwendwa Mbithi | 6-2,4-6,6-3 |