Stadium: Court 6 Round: 27
| ITF Croatia F3 | 2018/03/22 09:00 | Mike Urbanija v Ljubomir Celebic | 6-0,3-6,2-6 |
| ITF Croatia F3 | 2018/03/21 14:25 | Edoardo Sardella v Mike Urbanija | 3-6,4-6 |
| ITF Croatia F3 | 2018/03/20 09:00 | Mike Urbanija v Constantin Christ | 6-0,6-2 |
| ITF Croatia F3 | 2018/03/19 11:00 | Mike Urbanija v Nemanja Subanovic | 3-6,6-4,6-2 |
| ITF Croatia F2 | 2018/03/15 09:00 | Mike Urbanija v Mate Valkusz | 1-6,4-6 |
| ITF Croatia F2 | 2018/03/14 09:00 | Mate Delic v Mike Urbanija | 5-7,6-2,4-6 |
| ITF Croatia F2 | 2018/03/13 08:00 | Mike Urbanija v Flemming Peters | 6-3,6-0 |
| ITF Croatia F2 | 2018/03/11 08:00 | Mike Urbanija v Andrea Fiorentini | 6-4,6-0 |
| Challenger San Francisco Qual | 2018/02/03 22:30 | Nick Chappell v Jack Molloy | 6-4,3-6,2-6 |
| Challenger Dallas Qual | 2018/01/28 18:15 | Dominik Koepfer v Nick Chappell | 6-4,6-4 |
| Challenger Dallas Qual | 2018/01/27 16:00 | Nick Chappell v Nathan Chavez | 6-3,6-0 |
| ITF USA F37 | 2017/11/14 17:50 | Nick Chappell v Jonathan Chang | 6-3,4-6,3-6 |
| ITF USA F36 | 2017/11/07 15:00 | Patrick Kypson v Nick Chappell | 6-4,6-0 |
| ITF USA F35 | 2017/10/31 15:00 | Nick Chappell v Wil Spencer | 2-6,6-3,4-6 |
| Challenger Stockton Qual | 2017/09/30 18:15 | Sekou Bangoura v Nick Chappell | 7-6,6-4 |
| Challenger Tiburon Qual | 2017/09/23 21:40 | Greg Jones v Nick Chappell | 7-5,7-6 |