| ATP - Parma | 05/23 13:35 | 25 | [446] Flavio Cobolli v Marcos Giron [82] | 3-6,7-6,7-6 | |
| ATP - Roma | 05/08 13:35 | 14 | [91] Marcos Giron v Federico Delbonis [77] | 3-6,3-6 | |
| ATP - Madrid | 05/04 17:20 | 25 | [4] Dominic Thiem v Marcos Giron [91] | 6-1,6-3 | |
| ATP - Madrid | 05/03 14:55 | 24 | [79] Pablo Andujar v Marcos Giron [91] | 7-6,6-7,5-7 | |
| ATP - Madrid | 05/02 09:00 | 19 | [59] Yoshihito Nishioka v Marcos Giron [92] | Retired | |
| ATP - Madrid | 05/01 09:00 | 14 | [92] Marcos Giron v Thiago Monteiro [78] | 6-4,6-7,7-6 | |
| ATP - Estoril | 04/27 14:25 | 25 | [92] Marcos Giron v Corentin Moutet [73] | 4-6,7-6,4-6 | |
| ATP - Miami | 03/26 15:00 | 24 | [88] Marcos Giron v Taylor Fritz [32] | 2-6,2-6 | |
| ATP - Miami | 03/24 16:40 | 23 | [88] Marcos Giron v Tommy Paul [53] | 7-6,6-4 | |
| ATP - Roterdão | 03/02 11:40 | 25 | [80] Marcos Giron v Andrey Rublev [8] | 6-7,3-6 | |
| ATP - Roterdão | 02/28 10:00 | 19 | [78] Marcos Giron v Norbert Gombos [93] | 6-3,6-4 | |
| ATP - Roterdão | 02/27 10:00 | 14 | [78] Marcos Giron v Tim Van Rijthoven [328] | 6-2,5-7,6-4 | |
| ATP - Montpellier | 02/23 09:30 | 25 | [160] Tallon Griekspoor v Marcos Giron [78] | 6-2,6-7,6-3 | |
| Open da Austrália | 02/08 03:30 | 23 | [73] Marcos Giron v Alexander Zverev [7] | 7-6,6-7,3-6,2-6 | |
| ATP - Murray River Open | 02/05 01:10 | 26 | [73] Marcos Giron v Daniel Evans [33] | 4-6,6-7 | |
| ATP - Murray River Open | 02/02 23:30 | 25 | [35] Adrian Mannarino v Marcos Giron [73] | 3-6,4-6 | |
| ATP - Murray River Open | 02/02 02:25 | 24 | [73] Marcos Giron v Michael Mmoh [177] | 6-1,7-5 | |
| ATP - Paris | 11/05 11:35 | 26 | [91] Marcos Giron v Milos Raonic [17] | 6-7,2-6 | |
| ATP - Paris | 11/03 21:00 | 25 | [10] Matteo Berrettini v Marcos Giron [91] | 6-7,7-6,5-7 | |
| ATP - Paris | 11/02 11:45 | 24 | [46] Albert Ramos-Vinolas v Marcos Giron [86] | 3-6,6-4,1-6 | |
| ATP - Paris | 11/01 10:00 | 19 | [54] Laslo Djere v Marcos Giron [86] | 6-7,6-7 | |
| ATP - Paris | 10/31 09:00 | 14 | [100] Roberto Carballes Baena v Marcos Giron [86] | 4-6,1-6 | |
| ATP - Antuérpia | 10/23 16:55 | 27 | [94] Marcos Giron v Alex De Minaur [29] | 3-6,0-6 | |
| ATP - Antuérpia | 10/22 19:10 | 26 | [14] David Goffin v Marcos Giron [94] | 3-6,5-7 | |
| ATP - Antuérpia | 10/20 12:25 | 25 | Marcos Giron v Luca Nardi | 4-6,6-4,6-1 | |
| ATP - Antuérpia | 10/19 10:00 | 19 | [90] Marcos Giron v Yasutaka Uchiyama [95] | 7-6,6-2 | |
| ATP - Antuérpia | 10/18 10:00 | 14 | [90] Marcos Giron v Kamil Majchrzak [105] | 6-3,4-6,6-3 | |
| ATP - Colónia | 10/13 15:05 | 25 | [90] Marcos Giron v Marin Čilić [40] | 2-6,6-4,3-6 | |
| ATP - Colónia | 10/11 11:45 | 164 | [90] Lloyd Harris v Marcos Giron [96] | 2-6,6-4,6-2 | |
| ATP - Colónia | 10/10 13:55 | 64 | [203] Rudolf Molleker v Marcos Giron [96] | 4-6,3-6 |
Wikipedia - Marcos Giron
Marcos Andres Giron (born July 24, 1993; Spanish: Girón) is an American professional tennis player. He achieved a career-high singles ranking of No. 44 on 19 Feb 2024 and a doubles ranking of No. 194 on August 1, 2022. He won the boys' singles in the Ojai Tennis Tournament in 2009 and the men’s invitational in 2011. In 2014, Giron won the singles title at the 2014 NCAA Division I Tennis Championships for UCLA.