Stadium: Court 3 Round: 25 Ground: Clay
| Quito, Ecuador | 2018/02/07 17:00 | Alessandro Giannessi v Polansky, Peter | 6-3,6-4 |
| Challenger - Barcelone | 2020/10/04 08:30 | Andrea Collarini v Polansky, Peter | 6-4,6-2 |
| Challenger - Barcelone | 2020/10/03 08:30 | Tristan Lamasine v Polansky, Peter | 6-1,3-6,1-6 |
| Challenger - Split | 2020/09/29 12:10 | Klahn, Bradley v Polansky, Peter | 6-7,6-4,7-6 |
| Open de France | 2020/09/22 10:00 | Mayer, Leonardo v Polansky, Peter | 7-5,6-0 |
| Iasi, Romania | 2020/09/14 12:30 | Polansky, Peter v Jaume Munar | 4-6,2-6 |
| Challenger - Aix en Provence | 2020/09/05 08:00 | Polansky, Peter v Bemelmans, Ruben | 6-7,6-4,3-6 |
| Challenger - Ostrava | 2020/08/31 10:00 | Polansky, Peter v Stakhovsky, Sergiy | 6-4,4-6,3-6 |
| Matchplay 120 | 2020/06/24 15:00 | Roberto Cid Subervi v Polansky, Peter | 6-1,5-1 |
| Challenger - Split | 2020/10/02 11:00 | Alessandro Giannessi v Gojo, Borna | 3-6,3-6 |
| Challenger - Split | 2020/09/29 12:45 | Nino Serdarusic v Alessandro Giannessi | 4-6,4-6 |
| Open de France | 2020/09/23 11:10 | Marc Polmans v Alessandro Giannessi | 5-7,6-4,6-3 |
| Open de France | 2020/09/21 09:20 | Petrovic, Danilo v Alessandro Giannessi | 4-6,6-7 |
| ATP - Rome | 2020/09/12 13:30 | Hugo Dellien v Alessandro Giannessi | 7-5,6-4 |
| Challenger Trieste | 2020/08/24 10:00 | Tomas Martin Etcheverry v Alessandro Giannessi | 6-3,4-6,6-1 |
| Challenger Todi | 2020/08/19 18:30 | Federico Gaio v Alessandro Giannessi | 6-4,6-2 |
| Challenger Todi | 2020/08/17 16:50 | Alessandro Giannessi v Maxime Janvier | 6-2,6-3 |