| Challenger Da Nang | 01/12 04:30 | 29 | [110] Granollers, Marcel v Viola, Matteo [289] | 6-2,6-0 | |
| Challenger Da Nang | 01/11 06:00 | 28 | [275] Thai-Son Kwiatkowski v Viola, Matteo [289] | 7-5,6-7,2-6 | |
| Challenger Da Nang | 01/10 05:00 | 27 | [389] Yan Bai v Viola, Matteo [289] | 3-6,6-7 | |
| Challenger Da Nang | 01/09 07:30 | 26 | [376] Benjamin Hassan v Viola, Matteo [289] | 4-6,1-6 | |
| Challenger Da Nang | 01/07 08:00 | 25 | [419] Wishaya Trongcharoenchaikul v Viola, Matteo [289] | 6-4,3-6,4-6 | |
| Challenger Andria | 11/20 17:45 | 25 | [294] Viola, Matteo v Stakhovsky, Sergiy [140] | 1-6,5-7 | |
| Challenger Bratislava | 11/04 12:20 | 46 | [271] Viola, Matteo v Haerteis, Johannes [490] | 3-6,6-7 | |
| Challenger Bratislava | 11/03 14:05 | 45 | [271] Viola, Matteo v Marek Gengel [312] | 6-2,6-1 | |
| Challenger Ismaning | 10/19 12:00 | 27 | [296] Viola, Matteo v Ugo Humbert [99] | 1-6,2-6 | |
| Challenger Ismaning | 10/17 11:00 | 26 | [224] Ward, James v Viola, Matteo [296] | 5-7,6-1,6-7 | |
| Challenger Ismaning | 10/16 11:00 | 25 | [327] Safranek, Vaclav v Viola, Matteo [296] | 4-6,2-6 | |
| Challenger - Barcelone | 10/11 10:50 | 26 | [293] Viola, Matteo v Zekic, Miljan [278] | 4-6,5-7 | |
| Challenger - Barcelone | 10/10 10:00 | 25 | [308] Guez, David v Viola, Matteo [293] | 6-7,3-6 | |
| Challenger Sibiu | 09/18 12:10 | 25 | [284] Viola, Matteo v Nino Serdarusic [228] | 2-6,7-6,1-6 | |
| Istanbul, Turkey | 09/14 13:25 | 27 | [123] Fabbiano, Thomas v Viola, Matteo [297] | 3-6,6-2,6-4 | |
| Istanbul, Turkey | 09/13 08:00 | 26 | [297] Viola, Matteo v Constant Lestienne [172] | 6-3,6-1 | |
| Istanbul, Turkey | 09/10 09:30 | 25 | [311] Denis Yevseyev v Viola, Matteo [297] | 6-7,4-6 | |
| Challenger Cassis | 09/03 09:00 | 46 | Viola, Matteo v Wang, Tak Khunn | 6-0,5-7,5-7 | |
| Challenger Como | 08/25 10:45 | 45 | [304] Zekic, Miljan v Viola, Matteo [295] | 6-2,6-4 | |
| Cordenons, Italy | 08/14 10:00 | 25 | [291] Viola, Matteo v Facundo Bagnis [153] | 0-6,2-6 | |
| Segovia, Spain | 08/02 10:20 | 26 | [303] Viola, Matteo v Quiroz, Roberto [226] | 5-7,5-7 | |
| Segovia, Spain | 07/31 14:10 | 25 | [117] Stakhovsky, Sergiy v Viola, Matteo [303] | 3-6,6-2,6-7 | |
| Challenger Padova | 07/24 19:20 | 25 | [277] Viola, Matteo v Robredo, Tommy [242] | 6-1,1-6,1-6 | |
| Challenger San Benedetto | 07/20 17:00 | 27 | [233] Guttierrez-Ferrol, Sergio v Viola, Matteo [294] | 6-1,6-0 | |
| Challenger San Benedetto | 07/19 18:10 | 26 | [294] Viola, Matteo v Joao Domingues [250] | 2-6,6-3,6-3 | |
| Challenger San Benedetto | 07/17 15:05 | 25 | [294] Viola, Matteo v Rondoni, Pietro [388] | 7-6,6-2 | |
| ATP Eastbourne Qual | 06/24 10:00 | 164 | [78] Alex De Minaur v Viola, Matteo [270] | 6-2,6-4 | |
| ATP Eastbourne Qual | 06/23 11:15 | 64 | [296] Whittington, Andrew v Viola, Matteo [270] | 6-4,4-6,2-6 | |
| Challenger Poprad Tatry | 06/19 11:15 | 25 | [206] Balazs, Attila v Viola, Matteo [270] | 6-3,6-3 | |
| Stuttgart, Germany | 06/12 09:00 | 25 | [55] Simon, Gilles v Viola, Matteo [281] | 6-0,6-3 |