| ATP Paryż | 10/31 10:25 | 14 | [163] Alessandro Giannessi v Radu Albot [85] | 5-7,4-6 | |
| Challenger Marbella | 10/27 14:30 | 25 | [163] Alessandro Giannessi v Gianluca Mager [96] | 6-2,1-6,2-6 | |
| Challenger Lisbon | 10/17 09:00 | 28 | [164] Alessandro Giannessi v Pedro Sousa [111] | 4-6,4-6 | |
| Challenger Lisbon | 10/16 12:30 | 27 | [298] Dimitar Kuzmanov v Alessandro Giannessi [164] | 4-6,3-6 | |
| Challenger Lisbon | 10/14 10:55 | 26 | [164] Alessandro Giannessi v Paolo Lorenzi [134] | 7-5,6-3 | |
| Challenger Lisbon | 10/12 09:00 | 25 | [172] Alessandro Giannessi v Roberto Cid Subervi [214] | 6-3,5-7,6-2 | |
| Challenger Barcelona | 10/07 10:15 | 26 | [204] Maxime Janvier v Alessandro Giannessi [172] | 6-4,3-6,6-2 | |
| Challenger Barcelona | 10/06 08:00 | 25 | [205] Peter Polansky v Alessandro Giannessi [172] | 2-6,4-6 | |
| Challenger Barcelona | 10/06 08:00 | 25 | Steven Diez v Alessandro Giannessi | Cancelled | |
| Challenger Split | 10/02 11:00 | 27 | [172] Alessandro Giannessi v Borna Gojo [270] | 3-6,3-6 | |
| Challenger Split | 10/01 09:00 | 26 | [134] Bradley Klahn v Alessandro Giannessi [172] | Retired | |
| Challenger Split | 09/29 12:45 | 25 | [307] Nino Serdarusic v Alessandro Giannessi [172] | 4-6,4-6 | |
| French Open | 09/23 11:10 | 15 | [122] Marc Polmans v Alessandro Giannessi [171] | 5-7,6-4,6-3 | |
| French Open | 09/21 09:20 | 14 | [158] Danilo Petrovic v Alessandro Giannessi [169] | 4-6,6-7 | |
| ATP Rzym | 09/12 13:30 | 14 | [97] Hugo Dellien v Alessandro Giannessi [162] | 7-5,6-4 | |
| Challenger Trieste | 08/24 10:00 | 25 | [321] Tomas Martin Etcheverry v Alessandro Giannessi [160] | 6-3,4-6,6-1 | |
| Challenger Todi | 08/19 18:30 | 26 | [130] Federico Gaio v Alessandro Giannessi [160] | 6-4,6-2 | |
| Challenger Todi | 08/17 16:50 | - | [160] Alessandro Giannessi v Maxime Janvier [191] | 6-2,6-3 | |
| ATP Rio De Janeiro | 02/15 20:35 | 64 | [175] Joao Domingues v Alessandro Giannessi [154] | Retired | |
| ATP Buenos Aires | 02/08 18:55 | 64 | [141] Alessandro Giannessi v Facundo Bagnis [135] | 3-6,7-5,1-6 | |
| ATP Cordoba | 02/01 19:20 | 64 | [147] Alessandro Giannessi v Facundo D Acosta [496] | 1-6,6-3,2-6 | |
| Challenger Punta del Este | 01/31 22:00 | 27 | [77] Marco Cecchinato v Alessandro Giannessi [147] | 6-3,7-5 | |
| Challenger Punta del Este | 01/30 18:00 | 26 | [147] Alessandro Giannessi v Pedro Sousa [141] | 4-6,6-3,6-4 | |
| Challenger Punta del Este | 01/28 17:45 | 25 | [147] Alessandro Giannessi v Tomas Martin Etcheverry [340] | 5-7,7-5,6-4 | |
| Australian Open | 01/15 02:00 | 44 | [233] Duckhee Lee v Alessandro Giannessi [145] | 2-6,7-5,7-6 | |
| Challenger Hamburg | 10/23 18:00 | 25 | [175] Cedrik-Marcel Stebe v Alessandro Giannessi [149] | 6-2,6-3 | |
| Challenger Santo Domingo | 10/11 23:00 | 27 | [151] Alessandro Giannessi v Hugo Dellien [83] | 3-6,1-6 | |
| Challenger Santo Domingo | 10/10 20:55 | 26 | [112] Guido Andreozzi v Alessandro Giannessi [151] | Retired | |
| Challenger Santo Domingo | 10/09 19:20 | 25 | [352] Thiago Seyboth Wild v Alessandro Giannessi [151] | 1-6,4-6 | |
| Challenger Barcelona | 10/05 09:00 | 28 | [208] Jozef Kovalik v Alessandro Giannessi [166] | 6-3,7-6 |
Alessandro Giannessi (ur. 30 maja 1990 w La Spezii) – włoski tenisista, reprezentant w Pucharze Davsa.