Stadium: C Round: 25 Ground: Hardcourt outdoor
| ITF Women Canberra | 2018/03/21 02:00 | Jaimee Fourlis v Risa Ozaki | 6-2,6-1 |
| ITF Women Shenzhen | 2018/03/13 02:00 | Viktoria Hruncakova v Risa Ozaki | 6-4,6-2 |
| WTA Indian Wells Qual | 2018/03/05 20:35 | Su-Wei Hsieh v Risa Ozaki | 6-4,6-3 |
| WTA Indian Wells Qual | 2018/02/24 20:00 | Risa Ozaki v Francesca Di Lorenzo | 4-6,2-6 |
| WTA Doha Qual | 2018/02/10 12:35 | Monica Niculescu v Risa Ozaki | 6-1,6-0 |
| WTA Taipei | 2018/01/30 06:10 | Yafan Wang v Risa Ozaki | 6-2,6-4 |
| Australian Open Women Qual | 2018/01/11 03:35 | Risa Ozaki v Miharu Imanishi | 7-5,6-7,1-6 |
| WTA Auckland Qual | 2017/12/30 21:00 | Arantxa Rus v Risa Ozaki | 6-3,2-6,6-1 |
| WTA Miami | 2018/03/22 18:30 | Magdalena Rybarikova v Monica Niculescu | 3-6,3-6 |
| WTA Indian Wells | 2018/03/10 19:00 | Sofya Zhuk v Magdalena Rybarikova | 6-3,2-6,7-5 |
| WTA Doha | 2018/02/13 14:15 | Fatma Al Nabhani v Magdalena Rybarikova | 3-6,1-6 |
| 2018 Fed Cup | 2018/02/10 16:00 | Magdalena Rybarikova v Anna Kalinskaya | 5-7,6-3,6-4 |
| Australian Open Women | 2018/01/21 02:40 | Magdalena Rybarikova v Caroline Wozniacki | 3-6,0-6 |
| Australian Open Women | 2018/01/19 05:15 | Kateryna Volodko v Magdalena Rybarikova | 5-7,6-3,1-6 |
| Australian Open Women | 2018/01/17 01:30 | Kirsten Flipkens v Magdalena Rybarikova | 4-6,6-0,2-6 |
| Australian Open Women | 2018/01/15 00:00 | Taylor Townsend v Magdalena Rybarikova | 0-6,5-7 |