Stadium: Stadium Court Round: 26 Ground: Hardcourt indoor
| New York, USA | 2018/02/13 00:30 | Harrison, Ryan v Young, Donald | 6-3,7-6 |
| Open d'Australie | 2018/01/19 09:00 | Harrison, Ryan v Marin Cilic | 6-7,3-6,6-7 |
| Open d'Australie | 2018/01/17 04:15 | Cuevas, Pablo v Harrison, Ryan | 4-6,6-7,4-6 |
| Open d'Australie | 2018/01/15 00:00 | Sela, Dudi v Harrison, Ryan | 3-6,7-5,6-3,5-7,2-6 |
| ATP Brisbane | 2018/01/07 09:00 | Kyrgios, Nick v Harrison, Ryan | 6-4,6-2 |
| ATP Brisbane | 2018/01/06 03:20 | Alex De Minaur v Harrison, Ryan | 6-4,6-7,4-6 |
| ATP Brisbane | 2018/01/04 05:15 | Harrison, Ryan v Yannick Hanfmann | 6-7,6-4,6-2 |
| ATP Brisbane | 2018/01/01 01:00 | Harrison, Ryan v Mayer, Leonardo | 6-4,3-6,6-2 |
| New York, USA | 2018/02/12 22:25 | Donaldson, Jared v Karlovic, Ivo | 4-6,6-7 |
| Quito, Ecuador | 2018/02/08 19:20 | Corentin Moutet v Karlovic, Ivo | 7-5,6-7,7-6 |
| Quito, Ecuador | 2018/02/07 17:00 | Ernesto Escobedo v Karlovic, Ivo | 4-6,7-6,6-7 |
| Open d'Australie | 2018/01/19 04:50 | Seppi, Andreas v Karlovic, Ivo | 6-3,7-6,6-7,6-7,9-7 |
| Open d'Australie | 2018/01/17 02:20 | Karlovic, Ivo v Sugita, Yuichi | 7-6,6-7,7-5,4-6,12-10 |
| Open d'Australie | 2018/01/15 05:15 | Karlovic, Ivo v Laslo Djere | 7-6,6-3,7-6 |
| Antwerp, Belgium | 2017/10/16 12:55 | Karlovic, Ivo v Pella, Guido | 3-6,7-5,7-6 |
| Shanghai, Chine | 2017/10/09 05:00 | Lopez, Feliciano v Karlovic, Ivo | 7-6,7-6 |