| ATP - Madrid | 04/30 16:40 | 25 | [53] Marcos Giron v Alejandro Tabilo [91] | 3-6,5-7 | |
| ATP - München | 04/26 14:30 | 25 | [72] Hugo Gaston v Marcos Giron [53] | 6-4,6-7,7-5 | |
| ATP - Barcelona | 04/18 09:00 | 24 | [55] Marcos Giron v Federico Coria [52] | 2-6,6-3,1-6 | |
| ATP - Monte Carlo | 04/10 11:35 | 24 | [45] Alejandro Davidovich Fokina v Marcos Giron [53] | 7-5,6-3 | |
| ATP - Houston | 04/06 02:00 | 25 | [30] Frances Tiafoe v Marcos Giron [53] | 6-4,6-4 | |
| ATP - Miami | 03/24 21:20 | 23 | [55] Marton Fucsovics v Marcos Giron [52] | 6-3,6-4 | |
| ATP - Indian Wells | 03/10 21:25 | 23 | [55] Marcos Giron v Lorenzo Musetti [56] | 3-6,5-7 | |
| ATP - Acapulco | 02/25 00:30 | 27 | [59] Marcos Giron v Stefanos Tsitsipas [4] | 3-6,4-6 | |
| ATP - Acapulco | 02/24 00:00 | 26 | [17] Pablo Carreno-Busta v Marcos Giron [59] | 7-6,4-6,6-7 | |
| ATP - Acapulco | 02/23 01:40 | 25 | [80] John Millman v Marcos Giron [59] | Retired | |
| ATP - Delray Beach | 02/17 18:00 | 26 | [91] John Millman v Marcos Giron [64] | 6-3,7-6 | |
| ATP - Delray Beach | 02/15 19:20 | 25 | [161] Tennys Sandgren v Marcos Giron [64] | 5-7,3-6 | |
| ATP - Dallas | 02/13 01:00 | 28 | [70] Marcos Giron v Jenson Brooksby [54] | 4-6,7-6,6-7 | |
| ATP - Dallas | 02/11 19:30 | 27 | [19] Taylor Fritz v Marcos Giron [70] | 4-6,6-3,6-7 | |
| ATP - Dallas | 02/09 20:05 | 26 | [121] Liam Broady v Marcos Giron [70] | 6-3,3-6,1-6 | |
| ATP - Dallas | 02/08 18:00 | 25 | [163] Tennys Sandgren v Marcos Giron [70] | 4-6,4-6 | |
| Australian Open | 01/17 03:35 | 23 | [66] Marcos Giron v Rafael Nadal [5] | 1-6,4-6,2-6 | |
| ATP - Sydney | 01/10 04:45 | 25 | [75] Jordan Thompson v Marcos Giron [66] | 6-4,6-2 | |
| ATP - Melbourne | 01/05 00:00 | 25 | [104] Ricardas Berankis v Marcos Giron [66] | 7-5,6-4 | |
| ATP - Stockholm | 11/08 13:00 | 25 | Peter Gojowczyk v Marcos Giron | Cancelled | |
| ATP - Parijs | 11/04 18:30 | 26 | [8] Casper Ruud v Marcos Giron [57] | 6-2,6-1 | |
| ATP - Parijs | 11/03 17:35 | 25 | [57] Marcos Giron v Diego Schwartzman [15] | 7-6,7-6 | |
| ATP - Parijs | 11/02 20:10 | 24 | [41] Frances Tiafoe v Marcos Giron [57] | 7-6,4-6,3-6 | |
| ATP - Parijs | 10/31 10:00 | 19 | [60] Marcos Giron v Norbert Gombos [108] | 6-1,7-5 | |
| ATP - Parijs | 10/30 10:25 | 14 | [60] Marcos Giron v Gilles Simon [122] | 6-7,6-4,7-5 | |
| ATP - Wenen | 10/23 12:25 | 14 | [59] Marcos Giron v Norbert Gombos [103] | 6-7,4-6 | |
| ATP - Indian Wells | 10/10 02:20 | 24 | [59] Marcos Giron v Filip Krajinovic [34] | 6-7,5-7 | |
| ATP - Indian Wells | 10/07 21:15 | 23 | [59] Marcos Giron v Botic Van De Zandschulp [66] | 6-7,6-2,6-4 | |
| ATP - Sofia | 10/02 13:00 | 28 | [67] Marcos Giron v Gael Monfils [20] | 5-7,0-6 | |
| ATP - Sofia | 10/01 11:00 | 27 | [55] John Millman v Marcos Giron [67] | 4-6,2-6 |
Wikipedia - Marcos Giron
Marcos Giron (Thousand Oaks, 24 juli 1993) is een Amerikaanse tennisspeler. Hij heeft nog geen ATP-toernooi gewonnen. Wel deed hij al mee aan een grandslamtoernooi. Hij heeft geen challengers op zijn naam staan.