| ATP - Sófia | 09/30 09:00 | 26 | [67] Marcos Giron v Alex De Minaur [26] | 7-6,7-6 | |
| ATP - Sófia | 09/28 10:45 | 25 | [70] Jaume Munar v Marcos Giron [67] | 7-6,1-6,4-6 | |
| ATP - Metz | 09/24 12:00 | 27 | [69] Marcos Giron v Peter Gojowczyk [101] | 6-3,1-6,3-6 | |
| ATP - Metz | 09/23 12:00 | 26 | [21] Alex De Minaur v Marcos Giron [69] | 5-7,6-7 | |
| ATP - Metz | 09/21 09:00 | 25 | [74] Arthur Rinderknech v Marcos Giron [69] | 6-3,6-7,4-6 | |
| Open dos EUA | 09/01 16:00 | 24 | [64] Marcos Giron v Daniel Evans [27] | 4-6,6-7,6-2,3-6 | |
| Open dos EUA | 08/30 17:50 | 23 | [64] Marcos Giron v Antoine Hoang [150] | 6-3,6-4,7-5 | |
| ATP - Winston-Salem | 08/27 01:35 | 27 | [65] Marcos Giron v Carlos Alcaraz [54] | 6-7,2-6 | |
| ATP - Winston-Salem | 08/25 23:20 | 26 | [104] Pierre-Hugues Herbert v Marcos Giron [65] | 6-4,3-6,3-6 | |
| ATP - Winston-Salem | 08/24 23:40 | 25 | [65] Marcos Giron v Federico Delbonis [47] | 6-3,6-4 | |
| ATP - Winston-Salem | 08/23 00:15 | 24 | [66] Marcos Giron v Facundo Bagnis [82] | 7-5,6-4 | |
| ATP - Cincinnati | 08/17 15:00 | 24 | [38] Alexander Bublik v Marcos Giron [65] | 3-6,6-3,7-6 | |
| ATP - Cincinnati | 08/15 19:55 | 19 | Dominik Koepfer v Marcos Giron | 6-7,4-6 | |
| ATP - Cincinnati | 08/14 20:35 | 14 | Jeffrey John Wolf v Marcos Giron | 3-6,3-6 | |
| ATP - Toronto | 08/07 16:35 | 46 | [64] Marcos Giron v Brayden Schnur [250] | 2-6,3-6 | |
| ATP - Washington | 08/03 21:10 | 25 | [64] Marcos Giron v Cameron Norrie [29] | 4-6,3-6 | |
| ATP - Washington | 08/02 19:50 | 24 | [64] Marcos Giron v Illya Marchenko [157] | 4-6,6-4,7-6 | |
| Jogos Olímpicos 2020 - Masculino | 07/27 08:05 | 25 | [65] Marcos Giron v Kei Nishikori [69] | 6-7,6-3,1-6 | |
| Jogos Olímpicos 2020 - Masculino | 07/25 07:00 | 24 | [98] Norbert Gombos v Marcos Giron [64] | 6-7,6-3,2-6 | |
| Wimbledon | 07/01 15:30 | 24 | [18] Hubert Hurkacz v Marcos Giron [66] | 6-3,6-2,6-4 | |
| Wimbledon | 06/30 11:20 | 23 | [76] Emil Ruusuvuori v Marcos Giron [66] | 4-6,6-2,2-6,6-0,4-6 | |
| ATP - Halle | 06/18 12:50 | 27 | [75] Marcos Giron v Felix Auger Aliassime [21] | 3-6,2-6 | |
| ATP - Halle | 06/16 14:55 | 26 | [45] Jan-Lennard Struff v Marcos Giron [75] | 7-6,3-6,4-6 | |
| ATP - Halle | 06/14 11:25 | 25 | [66] Vasek Pospisil v Marcos Giron [75] | 6-7,6-7 | |
| ATP - Halle | 06/13 09:00 | 19 | [84] Marcos Giron v Daniel Elahi Galan [107] | 6-4,7-6 | |
| ATP - Halle | 06/12 13:00 | 14 | [84] Marcos Giron v Dominic Stephan Stricker [335] | 6-4,7-5 | |
| ATP - Estugarda | 06/07 11:50 | 14 | [122] Gregoire Barrere v Marcos Giron [84] | 6-3,6-2 | |
| Open de França | 06/04 13:25 | 25 | [84] Marcos Giron v Cristian Garin [23] | 1-6,7-5,2-6,2-6 | |
| Open de França | 06/02 14:00 | 24 | [84] Marcos Giron v Guido Pella [61] | 7-6,6-1,6-7,6-4 | |
| Open de França | 05/30 13:15 | 23 | [17] Grigor Dimitrov v Marcos Giron [82] | Retired |
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.