Stadium: Central Round: 26 Ground: Clay
| Challenger - Buenos Aires | 2019/09/25 20:30 | Mayer, Leonardo v Federico Zeballos | 7-5,6-1 |
| US Open, New York, USA | 2019/08/27 22:00 | Antoine Hoang v Mayer, Leonardo | 3-6,6-2,6-7,6-1,6-3 |
| Kitzbuhel, Austria | 2019/07/30 09:00 | Andujar, Pablo v Mayer, Leonardo | 3-6,6-3,6-2 |
| Hamburg, Germany | 2019/07/22 16:30 | Mayer, Leonardo v Rudolf Molleker | 6-7,4-6 |
| Umag, Croatia | 2019/07/19 15:30 | Laslo Djere v Mayer, Leonardo | 6-4,6-7,6-3 |
| Umag, Croatia | 2019/07/17 15:15 | Jiri Vesely v Mayer, Leonardo | 6-3,4-6,4-6 |
| Umag, Croatia | 2019/07/16 17:30 | Andujar, Pablo v Mayer, Leonardo | 1-6,5-7 |
| Wimbledon, London, Great Britain | 2019/07/03 11:25 | Mayer, Leonardo v Hubert Hurkacz | 7-6,1-6,6-7,3-6 |
| Challenger - Buenos Aires | 2019/09/25 16:05 | Facundo Diaz Acosta v Renzo Olivo | 7-5,4-6,6-2 |
| Challenger - Buenos Aires | 2019/09/24 14:00 | Mariano Kestelboim v Facundo Diaz Acosta | 3-6,7-5,5-7 |
| Buenos Aires, Singles Qualifying M-ITF-ARG-22A | 2019/09/20 15:00 | Facundo Diaz Acosta v Gonzalo Villanueva | 5-7,1-6 |
| Buenos Aires, Singles Qualifying M-ITF-ARG-22A | 2019/09/19 17:50 | Facundo Diaz Acosta v Valerio Aboian | 6-0,6-2 |
| Buenos Aires, Singles Qualifying M-ITF-ARG-22A | 2019/09/17 16:30 | Facundo Diaz Acosta v Martinez Sarrasague, Felipe | 4-6,6-1,6-3 |
| Santa Cristina Val Gardena, Singles M-ITF-ITA-18A | 2019/08/18 08:30 | Facundo Diaz Acosta v Wilson Leite | 6-7,6-1,6-2 |
| Santa Cristina Val Gardena, Singles M-ITF-ITA-18A | 2019/08/17 11:55 | Facundo Diaz Acosta v Veldheer, Mick | 6-1,6-3 |
| Santa Cristina Val Gardena, Singles M-ITF-ITA-18A | 2019/08/16 10:10 | Rondoni, Pietro v Facundo Diaz Acosta | 6-7,2-6 |