Stadium: Court 5 Round: 26 Ground: Hardcourt indoor
| ITF M25 Sunderland | 2019/04/09 13:25 | Liam Broady v Igor Sijsling | 6-2,2-6,1-6 |
| ITF M25 Bolton | 2019/04/07 09:30 | Botic Van De Zandschulp v Igor Sijsling | 7-6,6-7,7-5 |
| ITF M25 Bolton | 2019/04/06 09:00 | Igor Sijsling v Lloyd Glasspool | 6-2,6-0 |
| ITF M25 Bolton | 2019/04/05 11:30 | Evan Hoyt v Igor Sijsling | 2-6,2-6 |
| ITF M25 Bolton | 2019/04/04 12:05 | Ronan Joncour v Igor Sijsling | 1-6,2-6 |
| ITF M25 Bolton | 2019/04/02 12:30 | Igor Sijsling v Viktor Durasovic | 6-1,6-2 |
| ITF M15 Sharm El Sheikh | 2019/03/31 08:00 | Igor Sijsling v Gilbert S K Junior | 6-2,3-6,6-1 |
| ITF M15 Sharm El Sheikh | 2019/03/30 08:00 | Igor Sijsling v Eduardo Struvay | 6-3,6-4 |
| ITF M25 Sunderland | 2019/04/10 09:00 | William Griffith v Scott Duncan | 7-5,7-6 |
| ITF M25 Bolton | 2019/04/02 10:20 | William Griffith v Julian Lenz | 0-6,5-7 |
| ITF M25 Calabasas | 2019/03/19 18:55 | Jonathan Gray v William Griffith | 6-2,7-6 |
| ITF M25 Calabasas | 2019/03/18 17:00 | Michael Shabaz v William Griffith | 7-6,4-6,3-10 |
| ITF M25 Bakersfield | 2019/03/11 17:00 | William Griffith v David Fox | 3-6,6-3,8-10 |
| ITF M15 Tucson | 2019/02/12 19:00 | William Griffith v Liam Draxl | 3-6,2-6 |
| ITF M15 Claremont | 2019/02/05 20:30 | Nick Chappell v William Griffith | 7-6,7-5 |
| Challenger Fairfield | 2018/10/06 19:25 | Jan Choinski v William Griffith | 6-4,7-6 |