ATP Indian Wells | 03/05 19:00 | 44 | [83] Thomas Fabbiano v Marcos Giron [217] | 3-6,6-2,4-6 | |
Challenger Indian Wells | 02/25 22:50 | 24 | [207] Marcos Giron v Christopher Eubanks [154] | 5-7,3-6 | |
Challenger Dallas | 02/08 18:35 | 27 | [225] Marcos Giron v Mitchell Krueger [209] | 5-7,7-6,3-6 | |
Challenger Dallas | 02/07 20:25 | 26 | [335] Emilio Gomez v Marcos Giron [225] | 3-6,4-6 | |
Challenger Dallas | 02/06 20:45 | 25 | [225] Marcos Giron v Tim Smyczek [192] | 6-7,6-2,7-6 | |
Challenger Dallas | 02/05 18:20 | 24 | [225] Marcos Giron v Louis Wessels [465] | 7-5,6-1 | |
Challenger Cleveland | 02/02 19:55 | 28 | [247] Marcos Giron v Maxime Cressy [335] | 3-6,6-3,3-6 | |
Challenger Cleveland | 02/01 18:35 | 27 | [247] Marcos Giron v Jared Hiltzik [357] | 7-6,6-4 | |
Challenger Cleveland | 01/31 20:20 | 26 | [291] Jeffrey John Wolf v Marcos Giron [247] | 4-6,7-6,5-7 | |
Challenger Cleveland | 01/30 20:00 | 25 | [282] Goncalo Oliveira v Marcos Giron [247] | 6-4,1-6,2-6 | |
Challenger Newport Beach | 01/23 19:40 | 25 | [50] Taylor Fritz v Marcos Giron [249] | 2-6,7-6,7-6 | |
Challenger Newport Beach | 01/21 22:50 | 24 | [288] Goncalo Oliveira v Marcos Giron [249] | 7-6,3-6,3-6 | |
Challenger Columbus | 01/10 18:00 | 26 | [267] Bernabe Zapata Miralles v Marcos Giron [251] | 6-4,7-6 | |
Challenger Columbus | 01/09 17:40 | 25 | [251] Marcos Giron v Kevin King [265] | 6-2,6-4 | |
Challenger Columbus | 01/08 16:00 | 24 | [290] Carlos Taberner v Marcos Giron [251] | 4-6,6-3,3-6 | |
Challenger Orlando | 01/06 16:00 | 29 | [198] Darian King v Marcos Giron [308] | 4-6,4-6 | |
Challenger Orlando | 01/05 18:05 | 28 | [308] Marcos Giron v Gastao Elias [263] | 6-3,7-5 | |
Challenger Orlando | 01/04 18:45 | 27 | [308] Marcos Giron v Mathias Bourgue [265] | 6-2,6-2 | |
Challenger Orlando | 01/03 15:00 | 26 | [308] Marcos Giron v Dennis Novikov [257] | 6-1,6-2 | |
Challenger Orlando | 01/01 15:00 | 25 | [250] Uladzimir Ignatik v Marcos Giron [308] | 1-6,5-7 | |
Challenger Orlando | 12/31 19:05 | 24 | [300] Andrea Collarini v Marcos Giron [308] | 7-6,2-6,0-6 | |
Challenger Houston | 11/13 16:00 | 25 | [360] Marcos Giron v Ivo Karlovic [102] | 4-6,2-6 | |
Challenger Knoxville | 11/04 19:25 | 45 | [378] Alejandro Gonzalez v Marcos Giron [373] | Cancelled | |
Challenger Charlottesville | 11/01 23:45 | 26 | [107] Ivo Karlovic v Marcos Giron [373] | 7-6,6-3 | |
Challenger Charlottesville | 10/30 22:10 | 25 | [373] Marcos Giron v Collin Altamirano [283] | 6-4,6-4 | |
Challenger Charlottesville | 10/29 14:00 | 54 | [285] Mikael Ymer v Marcos Giron [373] | 4-6,1-6 | |
Challenger Charlottesville | 10/28 15:40 | 46 | [366] Evan Song v Marcos Giron [371] | 3-6,6-7 | |
Challenger Charlottesville | 10/27 14:00 | 45 | [371] Marcos Giron v Harri Heliovaara [317] | 3-6,6-1,6-1 | |
Challenger Fairfield | 10/06 22:15 | 45 | [362] Marcos Giron v Thai-Son Kwiatkowski [334] | 6-4,2-6,4-6 | |
Challenger Stockton | 09/30 17:00 | 46 | [356] Marcos Giron v Pablo V-Gonzalez [424] | 3-6,6-1,4-6 |
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 February 2024 and a doubles ranking of No. 194 on 1 August 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.