| Open de França | 10/01 09:00 | 24 | [96] Marcos Giron v Thiago Monteiro [84] | 6-7,4-6,1-6 | |
| Open de França | 09/29 13:55 | 23 | [202] Quentin Halys v Marcos Giron [96] | 5-7,6-3,7-6,5-7,6-8 | |
| ATP - Roma | 09/12 12:05 | 14 | [96] Marcos Giron v Mikael Ymer [71] | 6-4,5-7,6-7 | |
| Open dos EUA | 09/02 15:00 | 24 | [26] Filip Krajinovic v Marcos Giron [96] | 6-4,6-1,6-3 | |
| Open dos EUA | 08/31 20:25 | 23 | [96] Marcos Giron v Marc Polmans [121] | 6-4,6-7,3-6,6-4,6-2 | |
| ATP - Nova Iorque | 08/24 15:00 | 25 | [5] Daniil Medvedev v Marcos Giron [101] | 6-4,6-4 | |
| ATP - Nova Iorque | 08/23 16:20 | 24 | [271] Mackenzie McDonald v Marcos Giron [102] | 6-7,5-7 | |
| ATP - Nova Iorque | 08/21 15:00 | 19 | [95] Gregoire Barrere v Marcos Giron [102] | 6-4,6-7,4-6 | |
| ATP - Nova Iorque | 08/20 16:50 | - | [102] Marcos Giron v Laslo Djere [80] | 6-2,6-2 | |
| Matchplay 120 | 07/02 22:00 | 1 | [102] Marcos Giron v Bradley Klahn [126] | 6-7,7-6,3-6 | |
| Matchplay 120 | 07/01 22:00 | 1 | Marcos Giron v Zachary Svajda | Retired | |
| Matchplay 120 | 06/29 22:00 | - | Ernesto Escobedo v Marcos Giron | View | |
| Matchplay 120 | 06/26 22:00 | 1 | Marcos Giron v Zachary Svajda | 6-4,6-4 | |
| Matchplay 120 | 06/22 22:00 | 1 | [181] Ernesto Escobedo v Marcos Giron [102] | 7-6,7-6 | |
| Matchplay 120 | 06/19 23:00 | 1 | Marcos Giron v Zachary Svajda | 4-6,5-7 | |
| Matchplay 120 | 06/17 23:00 | - | [102] Marcos Giron v Brandon Nakashima [220] | 6-4,3-6,6-3 | |
| Matchplay 120 | 06/10 22:00 | - | [181] Ernesto Escobedo v Marcos Giron [102] | 2-6,7-6,3-6 | |
| Matchplay 120 | 06/08 23:00 | 1 | [102] Marcos Giron v Steve Johnson [63] | 6-3,6-1 | |
| Matchplay 120 | 06/05 23:00 | 1 | [181] Ernesto Escobedo v Marcos Giron [102] | 5-7,5-7 | |
| Matchplay 120 | 05/29 23:00 | 1 | Zachary Svajda v Marcos Giron | 4-6,6-3,6-7 | |
| Challenger Indian Wells | 03/06 22:20 | 27 | [104] Marcos Giron v Brandon Nakashima [255] | 6-7,6-3,2-6 | |
| Challenger Indian Wells | 03/05 22:25 | 26 | [163] Roberto Marcora v Marcos Giron [104] | 6-7,1-6 | |
| Challenger Indian Wells | 03/04 18:00 | 25 | [393] Ryan Peniston v Marcos Giron [104] | 2-6,6-7 | |
| ATP - Acapulco | 02/26 23:40 | 26 | [20] John Isner v Marcos Giron [115] | 6-3,7-6 | |
| ATP - Acapulco | 02/25 04:55 | 25 | Marcos Giron v Gerardo L Villasenor | 6-4,7-6 | |
| ATP - Acapulco | 02/24 01:20 | 164 | [104] Taro Daniel v Marcos Giron [113] | 4-6,7-5,1-6 | |
| ATP - Acapulco | 02/23 03:50 | 64 | Juan A Hernandez v Marcos Giron | 5-7,1-6 | |
| ATP - Nova Iorque | 02/13 03:10 | 26 | [113] Marcos Giron v Ugo Humbert [43] | 1-6,0-6 | |
| ATP - Nova Iorque | 02/11 03:10 | 25 | [141] Jack Sock v Marcos Giron [113] | 3-6,4-6 | |
| Challenger - Newport Beach | 01/28 21:05 | 25 | [107] Marcos Giron v Sebastian Korda [246] | 4-6,6-3,6-7 |
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.