| ATP Delray Beach | 01/11 17:30 | 27 | [293] Christian Harrison v Gianluca Mager [101] | 7-6,6-4 | |
| ATP Delray Beach | 01/09 18:10 | 26 | [101] Gianluca Mager v Sam Querrey [56] | 7-6,6-1 | |
| ATP Delray Beach | 01/07 19:30 | 25 | [101] Gianluca Mager v Ryan Harrison [481] | 3-6,6-1,6-4 | |
| ATP Paris | 11/01 15:55 | 19 | [73] Stefano Travaglia v Gianluca Mager [96] | 6-2,7-5 | |
| ATP Paris | 10/31 18:50 | 14 | [132] Daniel Elahi Galan v Gianluca Mager [96] | 6-3,3-6,4-6 | |
| Challenger Marbella | 10/29 10:00 | 26 | [132] Daniel Elahi Galan v Gianluca Mager [96] | 4-6,7-5,6-1 | |
| Challenger Marbella | 10/27 14:30 | 25 | [163] Alessandro Giannessi v Gianluca Mager [96] | 6-2,1-6,2-6 | |
| ATP Sardinia | 10/13 12:15 | 25 | [91] Gianluca Mager v Marco Cecchinato [103] | 7-5,6-7,2-6 | |
| Challenger Parma | 10/07 11:05 | 26 | [259] Filippo Baldi v Gianluca Mager [89] | Retired | |
| Challenger Parma | 10/05 13:10 | 25 | [97] Yannick Hanfmann v Gianluca Mager [89] | 5-7,6-7 | |
| French Open | 09/29 10:15 | 23 | [24] Dusan Lajovic v Gianluca Mager [89] | 6-4,7-6,4-6,6-1 | |
| ATP Rome | 09/14 11:05 | 24 | [22] Grigor Dimitrov v Gianluca Mager [85] | 7-5,6-1 | |
| Challenger Aix en Provence | 09/08 09:30 | 25 | [80] Gianluca Mager v Thiago Seyboth Wild [113] | 3-6,5-7 | |
| US Open | 09/01 21:00 | 23 | [80] Gianluca Mager v Miomir Kecmanovic [47] | 4-6,4-6,7-6,6-3,2-6 | |
| ATP New York | 08/20 15:00 | 44 | [96] Andrej Martin v Gianluca Mager [79] | 6-2,7-5 | |
| Davis Cup | 03/07 12:40 | 45 | Gianluca Mager v Duckhee Lee | Cancelled | |
| Davis Cup | 03/06 14:10 | 45 | [79] Gianluca Mager v Ji Sung Nam [238] | 6-3,7-5 | |
| ATP Santiago | 02/25 16:00 | - | Filip Horansky v Gianluca Mager | Cancelled | |
| ATP Rio De Janeiro | 02/23 20:30 | 29 | [128] Gianluca Mager v Cristian Garin [25] | 6-7,5-7 | |
| ATP Rio De Janeiro | 02/23 01:30 | 28 | [128] Gianluca Mager v Attila Balazs [106] | 7-6,4-6,7-6 | |
| ATP Rio De Janeiro | 02/21 22:20 | 27 | [4] Dominic Thiem v Gianluca Mager [128] | 6-7,5-7 | |
| ATP Rio De Janeiro | 02/20 19:30 | 26 | [169] Joao Domingues v Gianluca Mager [128] | 3-6,6-7 | |
| ATP Rio De Janeiro | 02/18 22:00 | 25 | [128] Gianluca Mager v Casper Ruud [34] | 7-6,7-5 | |
| ATP Rio De Janeiro | 02/16 19:30 | 164 | [109] Attila Balazs v Gianluca Mager [127] | 0-6,2-6 | |
| ATP Rio De Janeiro | 02/15 20:55 | 64 | [196] Andrea Collarini v Gianluca Mager [127] | 1-6,2-6 | |
| ATP Buenos Aires | 02/08 17:25 | 64 | [377] Juan Manuel Cerundolo v Gianluca Mager [133] | 3-6,6-0,6-1 | |
| ATP Cordoba | 02/05 20:55 | 26 | [48] Pablo Cuevas v Gianluca Mager [133] | 6-7,7-6,6-1 | |
| ATP Cordoba | 02/03 19:30 | 25 | [244] Juan Pablo Ficovich v Gianluca Mager [133] | 2-6,6-3,2-6 | |
| Challenger Punta del Este | 01/29 15:00 | 25 | Felipe M R Alves v Gianluca Mager | 4-6,6-3,7-6 | |
| Australian Open | 01/16 04:20 | 45 | [115] Gianluca Mager v Max Purcell [216] | 3-6,6-4,4-6 |
Wikipedia - Gianluca Mager
Gianluca Mager (born 1 December 1994) is an Italian tennis player. He has a career-high ATP singles ranking of No. 66 achieved on 13 September 2021. He also has a career high ATP doubles ranking of No. 310 achieved on 10 June 2019.