Challenger Stockton | 09/29 17:00 | 45 | [327] Roberto Ortega-Olmedo v Marcos Giron [356] | 4-6,4-6 | |
Challenger Tiburon | 09/23 17:00 | 46 | [351] Marcos Giron v Roberto Ortega-Olmedo [325] | 3-6,6-1,5-7 | |
Challenger Tiburon | 09/22 17:00 | 45 | [351] Marcos Giron v Marc-Andrea Huesler [386] | 6-2,7-6 | |
Challenger Columbus | 09/17 21:35 | 25 | [330] Steven Diez v Marcos Giron [351] | 6-3,6-4 | |
Challenger Chicago | 09/03 23:05 | 54 | [80] Hugo Nys v Marcos Giron [349] | 6-1,6-4 | |
Challenger Chicago | 09/02 23:10 | 46 | [441] Jared Hiltzik v Marcos Giron [349] | 5-7,6-2,1-6 | |
Challenger Vancouver | 08/13 22:40 | 54 | [271] JC Aragone v Marcos Giron [349] | 6-3,5-7,6-3 | |
Challenger Vancouver | 08/12 23:40 | 46 | Mikael Torpegaard v Marcos Giron | 4-6,2-6 | |
Challenger Vancouver | 08/11 20:50 | 45 | [494] Luke Saville v Marcos Giron [371] | 3-6,3-6 | |
Challenger Aptos | 08/09 22:30 | 26 | Marcos Giron v Martin Redlicki | 3-6,4-6 | |
Challenger Aptos | 08/06 23:25 | 25 | [316] Tommy Paul v Marcos Giron [371] | 3-6,0-6 | |
Challenger Aptos | 08/05 18:30 | 54 | [287] Yosuke Watanuki v Marcos Giron [446] | 6-7,4-6 | |
Challenger Aptos | 08/04 20:10 | 46 | Henry Craig v Marcos Giron | 7-6,3-6,3-6 | |
ATP Los Cabos | 08/02 01:45 | 26 | [4] Juan Martin Del Potro v Marcos Giron [446] | 7-5,6-3 | |
ATP Los Cabos | 08/01 01:20 | 25 | [446] Marcos Giron v Marcelo Arevalo [145] | 6-2,7-5 | |
ATP Los Cabos Qual | 07/29 23:10 | 164 | [166] Daniel Elahi Galan v Marcos Giron [477] | 2-6,5-7 | |
ATP Los Cabos Qual | 07/28 23:00 | 64 | [477] Marcos Giron v Bradley Mousley [316] | 6-4,6-3 | |
Challenger Binghamton | 07/26 19:45 | 26 | [225] Jay Clarke v Marcos Giron [477] | 3-6,6-3,6-2 | |
Challenger Binghamton | 07/23 16:40 | 25 | Marcos Giron v Martin Redlicki | 4-6,6-3,7-5 | |
Challenger Winnetka | 07/09 16:55 | 25 | [368] Marcos Giron v Mitchell Krueger [220] | 6-4,1-6,2-6 | |
ITF USA F17 | 06/27 22:30 | 25 | Trent Bryde v Marcos Giron | Retired | |
ITF USA F15 | 06/21 19:00 | 26 | Marcos Giron v Petros Chrysochos | 7-5,3-6,2-6 | |
ITF USA F15 | 06/19 16:05 | 25 | Marcos Giron v Felipe Mantilla | 6-1,7-6 | |
ITF USA F13 | 06/14 14:00 | 26 | Marcos Giron v Yuval Solomon | 4-6,7-6,0-6 | |
ITF USA F13 | 06/12 14:00 | 25 | Marcos Giron v Gage Brymer | 6-3,6-3 | |
Challenger Busan | 05/18 03:35 | 27 | [351] Marcos Giron v Vasek Pospisil [78] | 6-3,2-6,4-6 | |
Challenger Busan | 05/17 02:00 | 26 | [148] Go Soeda v Marcos Giron [351] | 4-6,4-6 | |
Challenger Busan | 05/15 02:00 | 25 | Young Seok Kim v Marcos Giron | 3-6,3-6 | |
Challenger Gimcheon | 05/08 03:35 | 25 | [161] Jason Kubler v Marcos Giron [347] | 6-4,6-2 | |
Challenger Seoul | 04/30 06:15 | 25 | [323] Marcos Giron v Go Soeda [149] | 6-1,3-6,4-6 |
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.