| Country (sports) | |
|---|---|
| Born | 19 September 2005 Hasselt, Belgium |
| Height | 1.80 m (5 ft 11 in) |
| Plays | Right-handed (two-handed backhand) |
| Coach | Dries Beerden |
| Prize money | US $113,176 |
| Singles | |
| Career record | 1–3 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 0 |
| Highest ranking | No. 201 (10 November 2025) |
| Current ranking | No. 207 (8 December 2025) |
| Doubles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 0 |
| Highest ranking | No. 1,723 (27 February 2023) |
| Current ranking | No. 2,068 (15 December 2025) |
| Last updated on: 15 December 2025. | |
Gilles-Arnaud Bailly (born 19 September 2005) is a Belgian professional tennis player. He has a career-high ATP singles ranking of No. 201, achieved on 10 November 2025 and a doubles ranking of No. 1,723 reached on 27 February 2023. [1]
Bailly had notable results on ITF junior circuit. He was a runner-up at the 2022 French Open and the 2022 US Open in the boys' singles category. [2] [3] As a result, he reached an ITF junior combined ranking of world No. 1 on 28 November 2022. Besides that, he became the first boy from Belgium to be crowned a world junior champion by the ITF. [4]
Bailly made his debut at the 2022 European Open where he received a main draw wildcard but lost in the first round to compatriot David Goffin despite playing for more than three hours and winning the second set. [5] [6]
Bailly received another invitation at European Open, for the qualies. [7] The following year, he qualified to the main draw of his home tournament but lost to German Daniel Altmaier. [8]
Ranked No. 247, Bailly qualified again for his home event, that edition hosted in Brussels, [9] [10] and recorded his first ATP Tour win, over the same player, Altmaier, who defeated him the previous year. He lost to third seed Jiří Lehečka in the second round. [11] [12] [13] As a result, he moved into the top 235 in the singles rankings and entered the qualification zone of the NextGen Finals. He eventually made it as a first alternate, having been ranked 11th in the race, following the withdrawal of the two top players. [14]
Bailly finished that year at No. 204 in singles, having reached a career-high of world No. 201 the week before. [15] It was the third-largest rankings climb for the 2025 season - behind Rafael Jódar and Petr Brunclík - raising close to 600 positions. [16]
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| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
|---|---|---|---|---|---|---|---|
| Loss | 0–1 | Aug 2025 | CT Porto Cup, Portugal | Challenger | Clay | | 4–6, 2–6 |
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|
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
|---|---|---|---|---|---|---|---|
| Loss | 0–1 | Mar 2023 | M15 Antalya, Turkey | WTT | Clay | | 3–6, 1–6 |
| Win | 1–1 | Mar 2023 | M15 Antalya, Turkey | WTT | Clay | | 6–3, 4–6, 7–5 |
| Win | 2–1 | Sep 2023 | M15 Santa Margherita di Pula, Italy | WTT | Clay | | 6–1, 6–2 |
| Loss | 2–2 | Jan 2025 | M15 Monastir, Tunisia | WTT | Hard | | 6–3, 4–6, 5–7 |
| Win | 3–2 | Feb 2025 | M15 Monastir, Tunisia | WTT | Hard | | 6–4, 6–2 |
| Loss | 3–3 | Apr 2025 | M15 Antalya, Turkey | WTT | Clay | | 0–6, 2–6 |
| Win | 4–3 | Apr 2025 | M15 Oegstgeest, Netherlands | WTT | Clay | | 7–6(7–5), 6–2 |
| Win | 5–3 | Jul 2025 | M25 Uriage-les-Bains, France | WTT | Clay | 6–4, 7–6(7–1) | |
| Loss | 5–4 | Aug 2025 | M25 Koksijde, Belgium | WTT | Clay | | 6–2, 2–6, 3–6 |
| Win | 6–4 | Sep 2025 | M25 Meerbusch, Germany | WTT | Clay | | 6–4, 3–6, 7–6(7–5) |
| Win | 7–4 | Oct 2025 | M25 Sintra, Portugal | WTT | Hard | | 3–6, 7–6(9–7), 6–1 |
| Loss | 7–5 | Oct 2025 | M25 Sintra, Portugal | WTT | Hard | | 5–7, 2–6 |
| Result | Year | Tournament | Surface | Opponent | Score |
|---|---|---|---|---|---|
| Loss | 2022 | French Open | Clay | | 6–7(5–7), 3–6 |
| Loss | 2022 | US Open | Hard | | 6–7(3–7), 7–5, 2–6 |