ATP Munich | 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 Paris | 11/04 18:30 | 26 | [8] Casper Ruud v Marcos Giron [57] | 6-2,6-1 | |
ATP Paris | 11/03 17:35 | 25 | [57] Marcos Giron v Diego Schwartzman [15] | 7-6,7-6 | |
ATP Paris | 11/02 20:10 | 24 | [41] Frances Tiafoe v Marcos Giron [57] | 7-6,4-6,3-6 | |
ATP Paris | 10/31 10:00 | 19 | [60] Marcos Giron v Norbert Gombos [108] | 6-1,7-5 | |
ATP Paris | 10/30 10:25 | 14 | [60] Marcos Giron v Gilles Simon [122] | 6-7,6-4,7-5 | |
ATP Vienna | 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 | |
ATP Sofia | 09/30 09:00 | 26 | [67] Marcos Giron v Alex De Minaur [26] | 7-6,7-6 |
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.