| Challenger - Kobe | 11/12 06:10 | 14 | [273] Philip Sekulic v Yusuke Takahashi [467] | Retired | |
| Challenger Sydney | 11/02 01:45 | 26 | [67] Thanasi Kokkinakis v Philip Sekulic [282] | 7-5,7-5 | |
| Challenger Sydney | 10/31 02:20 | 25 | [467] Ajeet Rai v Philip Sekulic [282] | 2-6,6-7 | |
| Challenger - Playford | 10/26 01:30 | 26 | [286] Philip Sekulic v James Duckworth [125] | 5-7,1-6 | |
| Challenger - Playford | 10/24 01:10 | 25 | [397] Blake Ellis v Philip Sekulic [286] | 3-6,5-7 | |
| ATP - Tokio | 10/14 04:40 | 14 | [298] Philip Sekulic v Cristian Garin [98] | 6-7,3-6 | |
| Challenger - Šen-čen | 10/11 02:00 | 25 | [146] Aleksandar Kovacevic v Philip Sekulic [298] | 6-1,6-4 | |
| ATP - Šanghaj | 10/05 04:30 | 23 | [298] Philip Sekulic v Lorenzo Sonego [59] | 3-6,2-6 | |
| ATP - Šanghaj | 10/03 10:05 | 15 | [311] Arthur Weber v Philip Sekulic [292] | 4-6,3-6 | |
| ATP - Šanghaj | 10/02 10:45 | 14 | [292] Philip Sekulic v Kaichi Uchida [252] | 6-3,7-6 | |
| ATP - Chengdu | 09/23 06:45 | 26 | [325] Philip Sekulic v Lorenzo Musetti [18] | 6-7,7-6,0-6 | |
| ATP - Chengdu | 09/21 07:15 | 25 | [325] Philip Sekulic v Nuno Borges [88] | 7-5,5-7,6-3 | |
| ATP - Chengdu | 09/20 04:35 | 19 | [234] Evgeny Donskoy v Philip Sekulic [325] | 2-6,6-4,2-6 | |
| ATP - Chengdu | 09/19 07:25 | 14 | [378] Nick Chappell v Philip Sekulic [325] | 3-6,6-7 | |
| Challenger - Šanghaj | 09/05 03:00 | 25 | [325] Philip Sekulic v Li Tu [256] | 1-6,0-6 | |
| Challenger - Zhangjiagang | 08/29 02:30 | 25 | [256] Li Tu v Philip Sekulic [325] | 6-3,6-4 | |
| Challenger - Zhuhai | 08/23 03:00 | 26 | Yi Zhou v Philip Sekulic | 3-6,7-6,7-6 | |
| Challenger - Zhuhai | 08/21 07:30 | 25 | Rigele Te v Philip Sekulic | 3-6,7-6,4-6 | |
| Challenger - Cary | 08/06 16:30 | 14 | Philip Sekulic v Stefan Dostanic | 5-7,6-4,1-6 | |
| Challenger - Lexington | 08/01 17:05 | 25 | [335] Philip Sekulic v Tristan Schoolkate [268] | 6-3,6-7,1-6 | |
| Challenger - Lexington | 07/31 14:00 | 19 | Philip Sekulic v Justin Roberts | 6-1,6-4 | |
| Challenger - Lexington | 07/30 17:30 | 14 | Philip Sekulic v Kousuke Ogura | Walkover | |
| Challenger - Salinas | 07/26 16:20 | 26 | [270] Beibit Zhukayev v Philip Sekulic [340] | 7-6,6-3 | |
| Challenger - Salinas | 07/25 19:15 | 25 | [340] Philip Sekulic v Alexandr Cozbinov [452] | 7-6,6-4 | |
| Challenger - Granby | 07/23 20:20 | 29 | [477] Philip Sekulic v Alexis Galarneau [220] | 4-6,6-3,3-6 | |
| Challenger - Granby | 07/22 19:00 | 28 | James Trotter v Philip Sekulic | 4-6,6-2,6-7 | |
| Challenger - Granby | 07/21 17:00 | 27 | Justin Boulais v Philip Sekulic | 3-6,2-6 | |
| Challenger - Granby | 07/20 19:35 | 26 | [477] Philip Sekulic v Denis Kudla [165] | 7-5,6-3 | |
| Challenger - Granby | 07/18 14:00 | 25 | [477] Philip Sekulic v Yasutaka Uchiyama [270] | 6-7,7-6,6-1 | |
| Challenger - Granby | 07/17 17:05 | 19 | [372] Colin Sinclair v Philip Sekulic [477] | 3-6,4-6 |