Stadium: 1573 Arena Round: 25 Ground: Hardcourt outdoor
| US Open XD | 2019/09/03 02:05 | Chan H-C / Venus M v Koolhof / Peschke | 6-3,7-6 |
| US Open XD | 2019/08/31 20:30 | Demoliner / Duan v Koolhof / Peschke | 5-7,6-4,7-10 |
| US Open XD | 2019/08/30 20:45 | Mchale C / Harrison R v Koolhof / Peschke | 4-6,6-3,11-13 |
| Wimbledon XD | 2019/07/12 16:00 | Koolhof / Peschke v Dodig / Chan | 5-7,4-6 |
| Wimbledon XD | 2019/07/11 13:15 | Koolhof / Peschke v Sitak / Siegemund | 6-1,6-2 |
| Wimbledon XD | 2019/07/10 11:25 | Koolhof / Peschke v Qureshi A U H / Kichenok N | 7-6,6-4 |
| Wimbledon XD | 2019/07/06 17:15 | Koolhof / Peschke v Oswald P / Adamczak M | 6-1,6-4 |
| French Open XD | 2019/05/29 16:55 | Skugor / Olaru v Koolhof / Peschke | 6-3,4-6,10-7 |