Guido Iván Justo
| Country (sports) | Argentina |
|---|---|
| Born | 17 December 1997 Buenos Aires, Argentina |
| Height | 1.78 m (5 ft 10 in) |
| Plays | Right-handed (two-handed backhand) |
| Prize money | $119,990 |
| Singles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 1 Challenger, 4 ITF |
| Highest ranking | No. 277 (23 February 2026) |
| Current ranking | No. 277 (23 February 2026) |
| Doubles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 2 ITF |
| Highest ranking | No. 329 (23 February 2026) |
| Current ranking | No. 329 (23 February 2026) |
| Last updated on: 23 February 2026. | |
Guido Iván Justo (born 17 December 1997) is an Argentine tennis player.
Justo has a career high ATP singles ranking of No. 277 achieved on 23 February 2026 and a career high ATP doubles ranking of No. 329 achieved on 23 February 2026.[1]
Justo has won one ATP Challenger singles title at the 2026 Challenger de Tigre.
ATP Challenger and ITF Tour finals
Singles: 11 (5–6)
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| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
|---|---|---|---|---|---|---|---|
| Loss | 0–1 | Oct 2022 | M25 Río Cuarto, Argentina | World Tennis Tour | Clay | Hernán Casanova | 2–6, 3–6 |
| Loss | 0–2 | Aug 2023 | M15 Arequipa, Peru | World Tennis Tour | Clay | Álvaro Guillén Meza | 4–6, 3–6 |
| Win | 1–2 | Oct 2023 | M15 Castellón, Spain | World Tennis Tour | Clay | Miguel Damas | 6–3, 6–2 |
| Loss | 1–3 | Aug 2024 | M25 Arequipa, Peru | World Tennis Tour | Clay | Matías Soto | 0–6, 6–7(2-7) |
| Win | 2–3 | Sep 2024 | M15 Córdoba, Argentina | World Tennis Tour | Clay | Pedro Rodrigues | 7–5, 7–5 |
| Win | 3–3 | Dec 2024 | M15 Santiago, Chile | World Tennis Tour | Clay | Matías Soto | 0–6, 7–6(7-3), 6–0 |
| Loss | 3–4 | Jan 2025 | M15 Santiago, Chile | World Tennis Tour | Clay | Hernán Casanova | 2–6, 6–4, 4–6 |
| Loss | 3–5 | Jun 2025 | M15 San Salvador de Jujuy, Argentina | World Tennis Tour | Clay | Lorenzo Joaquín Rodríguez | 1–6, 7–5, 4–6 |
| Loss | 3–6 | Jun 2025 | M15 Salta, Argentina | World Tennis Tour | Clay | Santiago de la Fuente | Walkover |
| Win | 4–6 | Jul 2025 | M15 Santiago, Chile | World Tennis Tour | Clay | Lucio Ratti | 6–0, 6–4 |
| Win | 5–6 | Feb 2026 | Tigre, Argentina | Challenger | Clay | Lautaro Midón | 4–6, 6–3, 6–0 |