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

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 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.