# Juan Antonio Marín

Juan Antonio Marín Casero (born 2 March 1975) is a former professional male tennis player from Costa Rica, who represented the Central American nation at the 2000 Summer Olympics in Sydney.
He originally played on tour under the Spanish flag, as he was born to a father from Murcia and a mother from Asturias, and lived in Spain since the age of 14. However, in May 1998 he began representing Costa Rica.
In October 1999, Marín reached his career-high singles ranking of world No. 55. Previously that year he came close to beating the then-world No. 2 Pete Sampras at the 1999 French Open, with the American eventually winning 6–7, 6–4, 7–5, 6–7, 6–4. He never won a Grand Slam main draw match, despite appearing in 17.

## ATP career finals
### Singles: 2 (1 title, 1 runner-up)

* Legend
* Grand Slam Tournaments (0–0)
* ATP World Tour Finals (0–0)
* ATP Masters 1000 Series (0–0)
* ATP 500 Series (0–0)
* ATP 250 Series (1–1)
* Finals by surface
* Hard (0–0)
* Clay (1–1)
* Grass (0–0)
* Carpet (0–0)
* Finals by setting
* Outdoors (1–1)
* Indoors (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Jul 1997 | Båstad, Sweden | World Series | Clay | Magnus Norman | 5–7, 2–6 |
| Win | 1–1 | Jul 1999 | Båstad, Sweden | World Series | Clay | Andreas Vinciguerra | 6–4, 7–6$^{(7–4)}$ |

## ATP Challenger and ITF Futures finals
### Singles: 13 (5–8)

* Legend
* ATP Challenger (5–8)
* ITF Futures (0–0)
* Finals by surface
* Hard (0–2)
* Clay (5–6)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Win | 1-0 | Aug 1996 | Samarkand, Uzbekistan | Challenger | Clay | Sander Groen | 6–2, 6–4 |
| Loss | 1-1 | Feb 1997 | Punta del Este, Uruguay | Challenger | Clay | Marco Meneschincheri | 7–6, 1–6, 4–6 |
| Loss | 1-2 | Apr 1997 | Split, Croatia | Challenger | Clay | Dinu-Mihai Pescariu | 6–3, 2–6, 1–6 |
| Loss | 1-3 | Oct 1997 | Barcelona, Spain | Challenger | Clay | Carlos Costa | 1–6, 4–6 |
| Loss | 1-4 | Feb 1998 | Singapore, Singapore | Challenger | Hard | Fernando Vicente | 4–6, 4–6 |
| Loss | 1-5 | Mar 1998 | Ho Chi Minh City, Vietnam | Challenger | Hard | André Sá | 3–6, 6–3, 2–6 |
| Loss | 1-6 | Sep 1999 | Szczecin, Poland | Challenger | Clay | Andreas Vinciguerra | 2–6, 4–6 |
| Loss | 1-7 | Oct 2000 | Lima, Peru | Challenger | Clay | Guillermo Coria | 0–6, 6–7$^{(7–9)}$ |
| Loss | 1-8 | Jul 2001 | Lugano, Switzerland | Challenger | Clay | Jiří Vaněk | 2–6, 3–6 |
| Win | 2-8 | Aug 2001 | San Marino, San Marino | Challenger | Clay | Markus Hipfl | 6–2, 2–6, 7–6$^{(7–3)}$ |
| Win | 3-8 | Sep 2004 | Genoa, Italy | Challenger | Clay | Edgardo Massa | 7–5, 6–4 |
| Win | 4-8 | Aug 2005 | San Marino, San Marino | Challenger | Clay | Saša Tuksar | 6–2, 6–4 |
| Win | 5-8 | Oct 2005 | Rome, Italy | Challenger | Clay | Albert Montañés | 6–2, 7–6$^{(8–6)}$ |

### Doubles: 3 (1–2)

* Legend
* ATP Challenger (1–2)
* ITF Futures (0–0)
* Finals by surface
* Hard (0–0)
* Clay (1–2)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Loss | 0-1 | Sep 1996 | Seville, Spain | Challenger | Clay | Fabio Maggi | Ola Kristiansson Tom Vanhoudt | 0–6, 7–6, 1–6 |
| Loss | 0-2 | Mar 2002 | Olbia, Italy | Challenger | Clay | Sergi Bruguera | Filippo Messori Vincenzo Santopadre | 6–3, 4–6, 4–6 |
| Win | 1-2 | Nov 2005 | Guayaquil, Ecuador | Challenger | Clay | Juan Martín del Potro | Luis Horna Iván Miranda | walkover |

## Performance timeline

Key :
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |

### Singles

| Tournament | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | SR | W–L | Win % |
| Grand Slam tournaments ||||||||||||||||
| Australian Open | A | A | 1R | 1R | 1R | A | Q2 | A | Q1 | A | 1R | A | 0 / 4 | 0–4 | 0% |
| French Open | Q2 | Q2 | 1R | 1R | 1R | 1R | Q2 | Q1 | A | Q2 | 1R | A | 0 / 5 | 0–5 | 0% |
| Wimbledon | A | 1R | 1R | 1R | 1R | A | A | A | A | Q2 | A | Q1 | 0 / 4 | 0–4 | 0% |
| US Open | A | 1R | 1R | 1R | 1R | A | A | A | A | A | A | A | 0 / 4 | 0–4 | 0% |
| Win–loss | 0–0 | 0–2 | 0–4 | 0–4 | 0–4 | 0–1 | 0–0 | 0–0 | 0–0 | 0–0 | 0–2 | 0–0 | 0 / 17 | 0–17 | 0% |
| ATP World Tour Masters 1000 ||||||||||||||||
| Miami | A | A | A | 3R | 1R | A | A | A | A | A | A | A | 0 / 2 | 2–2 | 50% |
| Monte Carlo | A | A | A | A | Q2 | A | Q1 | A | A | A | A | A | 0 / 0 | 0–0 | – |
| Hamburg | Q3 | A | A | A | A | A | A | A | A | A | Q1 | A | 0 / 0 | 0–0 | – |
| Rome | A | A | A | Q2 | Q2 | A | A | A | A | A | Q2 | A | 0 / 0 | 0–0 | – |
| Win–loss | 0–0 | 0–0 | 0–0 | 2–1 | 0–1 | 0–0 | 0–0 | 0–0 | 0–0 | 0–0 | 0–0 | 0–0 | 0 / 2 | 2–2 | 50% |