| United Cup - SP | 01/07 11:55 | 29 | Swiatek/Hurkacz v Siegemund/Zverev | 4-6,7-5,4-10 | |
| United Cup - SP | 01/06 12:25 | 28 | Hunter/Ebden v Siegemund/Zverev | 6-7,7-6,13-15 | |
| United Cup - SP | 01/05 10:30 | 27 | Sakkari/Tsitsipas v Siegemund/Zverev | 3-6,3-6 | |
| United Cup - SP | 01/01 03:20 | - | Siegemund/Zverev v Bouzkova/Lehecka | 6-4,7-6 |