Stadium: Court 13 Round: 26 Ground: Hardcourt outdoor
| Midland, Doubles W-WITF-USA-04A | 2018/02/04 19:10 | Christian K / Santamaria S v Pegula J / Sanchez M | 7-5,4-6,10-8 |
| Midland, Doubles W-WITF-USA-04A | 2018/02/03 17:00 | Duque-Marino M / Irigoyen M v Christian K / Santamaria S | 7-5,6-7,4-10 |
| Midland, Doubles W-WITF-USA-04A | 2018/02/02 19:00 | Boserup J / Kerkhove L v Christian K / Santamaria S | 3-6,6-7 |
| Midland, Doubles W-WITF-USA-04A | 2018/02/01 02:50 | Bektas E / Guarachi Mathison A v Christian K / Santamaria S | 3-6,3-6 |
| Newport Beach, USA, Doubles | 2018/01/26 23:20 | Loeb J / Peterson R v Christian K / Santamaria S | 3-6,6-4,10-7 |
| Newport Beach, USA, Doubles | 2018/01/25 19:40 | Day K / Dolehide C v Christian K / Santamaria S | 3-6,3-6 |
| Newport Beach, USA, Doubles | 2018/01/23 23:45 | Bonic B / Muchova K v Christian K / Santamaria S | 7-5,2-6,3-10 |
| Dubaï, Doubles W-WITF-UAE-01A | 2017/12/11 12:00 | Kerkhove L / Marozava L v Christian K / Santamaria S | 6-1,6-0 |