Gauthier Onclin

BEL Age 25 180 cm / 5'11" Plays: Right-Handed, Two-Handed Backhand ATP Tour years active: 2025–2026

Gauthier Onclin represents Belgium on the ATP Tour and is ranked No. 158, matching a career high of No. 158. In TennisDB's records, Gauthier Onclin has a career record of 1–2 and no singles titles.

Ranking

158

Career high

158 (Aug 24, 2026)

Elo peak

1573 (26th percentile)

Career record

1–2 (33.3%)

Career titles

Prize money

$671,749

YTD W-L

1–1

Records cover recorded main-draw singles results in TennisDB's ATP event archive, including credited walkovers; qualifying is shown separately below.

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ATP Matches full match log →

Gauthier Onclin's recent, live, and scheduled ATP matches
Opponent	Score	Result	H2H	Match Data	Date	Round	Tournament	Category	Surface
Vitaliy Sachko #188	5-7 5-7	L	H2H	Match data	Aug 25, 2026	Q1 Q	US Open	Grand Slam	Hard
Shintaro Mochizuki #150	2-6 6-4 3-6	L	H2H	Match data	Jun 24, 2026*	Q2 Q	Wimbledon	Grand Slam	Grass
Lorenzo Giustino #228	6-3 7-5	W	H2H	Match data	Jun 23, 2026*	Q1 Q	Wimbledon	Grand Slam	Grass
Giovanni Mpetshi Perricard #93	6-7(1) 2-6	L	H2H	Match data	Jun 10, 2026	R16	Stuttgart Open	ATP 250	Grass
Fabian Marozsan #61	7-6(6) 6-3	W	H2H	Match data	Jun 8, 2026	R32	Stuttgart Open	ATP 250	Grass

Qualifying matches are shown here but excluded from main-draw summaries and leaderboards.

Rivals all rivalries →

Gauthier Onclin's most-played ATP rivals
Opponent	W	L	M	Last Played	H2H
Giovanni Mpetshi Perricard	0	1	1	Jun 10, 2026	H2H
Fabian Marozsan	1	0	1	Jun 8, 2026	H2H
Reilly Opelka	0	1	1	Jan 14, 2025	H2H

Career Results

Gauthier Onclin career results by season
Season	Age	Type	W	L	M	Win %	Start Rank	End Rank
2021	20	Qualifying Q	0	1	1	0.0%	—	—
2023	22	Qualifying Q	4	4	8	50.0%	—	—
2024	23	Qualifying Q	0	1	1	0.0%	—	—
2025	24	Qualifying Q	6	6	12	50.0%	—	—
2025	24	ATP	0	1	1	0.0%	236	268
2026	25	Qualifying Q	3	3	6	50.0%	—	—
2026	25	ATP	1	1	2	50.0%	266	158
Career		—	1	2	3	33.3%	—	—

Career Results by Surface

Gauthier Onclin career results by season and surface
Season	Age	Type	Hard				Clay				Grass				Total
Season	Age	Type	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
2021	20	Qualifying Q	0	1	1	0.0%	—	—	—	—	—	—	—	—	0	1	1	0.0%
2023	22	Qualifying Q	2	2	4	50.0%	1	1	2	50.0%	1	1	2	50.0%	4	4	8	50.0%
2024	23	Qualifying Q	0	1	1	0.0%	—	—	—	—	—	—	—	—	0	1	1	0.0%
2025	24	Qualifying Q	5	4	9	55.6%	0	1	1	0.0%	1	1	2	50.0%	6	6	12	50.0%
2025	24	ATP	0	1	1	0.0%	—	—	—	—	—	—	—	—	0	1	1	0.0%
2026	25	Qualifying Q	0	2	2	0.0%	—	—	—	—	3	1	4	75.0%	3	3	6	50.0%
2026	25	ATP	—	—	—	—	—	—	—	—	1	1	2	50.0%	1	1	2	50.0%
Career	—	—	0	1	1	0.0%	—	—	—	—	1	1	2	50.0%	1	2	3	33.3%

Career Results by Opponent Rank

Gauthier Onclin career results by season and opponent rank
Season	Age	1-10				11-30				31-100				100+				Total
Season	Age	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
2025	24	0	0	—	—	0	0	—	—	0	0	—	—	0	1	1	0.0%	0	1	1	0.0%
2026	25	0	0	—	—	0	0	—	—	1	1	2	50.0%	0	0	—	—	1	1	2	50.0%
Career		0	0	—	—	0	0	—	—	1	1	2	50.0%	0	1	1	0.0%	1	2	3	33.3%

Performance Stats

Gauthier Onclin performance statistics by season
Season	Age	Sample	Aces/M	DFs/M	1st Sv%	1st Sv Pts%	2nd Sv Pts%	BP Saved%	BP Conv%	Svc Pts%	Ret Pts%
2025	24	1/1	2.0	4.0	69.0%	65.0%	53.0%	43.0%	23.0%	61.0%	38.0%
2026	25	2/2	2.0	3.5	59.0%	76.5%	45.0%	73.5%	50.0%	64.0%	35.0%
Career		3/3	2.0	3.7	62.3%	72.7%	47.7%	63.3%	41.0%	63.0%	36.0%

Advanced Stats

Gauthier Onclin advanced statistics by season
Season	Age	Elo	P+	Serve+	Return+	PD	TPW%	Hard Elo	Clay Elo	Grass Elo	Set Win %	Set Margin	Dec. Set	Tiebreak	Pressure+	Schedule
2021	20	1491	101.8	—	—	—	—	—	—	—	—	—	—	—	—	—
2023	22	1509	105.5	—	—	—	—	—	—	—	—	—	—	—	—	—
2024	23	1495	100.5	—	—	—	—	—	—	—	—	—	—	—	—	—
2025	24	1534	109.9	-6.61	+3.95	0.974	48.0%	—	—	—	25.0%	-1.25	—	0–1	—	-0.03
2026	25	1538	105.0	-3.57	+0.64	0.972	49.0%	—	—	—	50.0%	-0.25	—	1–1	—	-0.01
Career		1573	108.7	-4.58	+1.74	0.973	48.7%	—	—	—	37.5%	-0.75	—	1–2 (33%)	—	-1.33

Tournament Results by Category

Grand Slams

Gauthier Onclin Grand Slams results by season
Season	Age	AO	RG	W	USO	W-L Win %
2023	22	—	Q2	Q2	Q2	3–3 (50%)
2024	23	Q1	—	—	—	0–1 (0%)
2025	24	R128	Q1	Q2	Q1	4–4 (50%)
2026	25	Q1	—	Q2	Q1	1–3 (25%)
W-L		3–3 (50%)	1–2 (33%)	3–3 (50%)	1–3 (25%)	8–11 (42%)

Masters 1000

Gauthier Onclin Masters 1000 results by season
Season	Age	SHA	W-L Win %
2025	24	Q2	1–1 (50%)
W-L		1–1 (50%)	1–1 (50%)

ATP 250

Gauthier Onclin ATP 250 results by season
Season	Age	ANT	HGZ	ANT	STU	W-L Win %
2021	20	Q1	—	—	—	0–1 (0%)
2023	22	Q2	—	—	—	1–1 (50%)
2025	24	—	Q2	Q1	—	1–2 (33%)
2026	25	—	—	—	R16	3–1 (75%)
W-L		1–2 (33%)	1–1 (50%)	0–1 (0%)	3–1 (75%)	5–5 (50%)

Results show the best round reached per tournament and season.

ATP Ranking History full ranking history →

Current rank

158

Career high

158

Career-high date

Aug 24, 2026

First Top 100

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First Top 50

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First Top 20

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First Top 10

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Ranking History Matrix

Gauthier Onclin ranking history by month and season
Season	Age	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2019	18	—	—	—	—	—	—	—	944	944	920	755	1886
2020	19	727	664	661	—	—	—	—	659	643	645	643	650
2021	20	656	603	583	540	542	537	540	556	525	515	496	512
2022	21	500	598	594	634	559	469	413	417	394	338	339	339
2023	22	264	227	224	214	206	214	208	198	206	216	228	231
2024	23	254	267	279	276	261	257	268	286	297	259	263	232
2025	24	216	214	207	207	232	206	210	213	194	219	229	268
2026	25	269	304	247	246	182	178	170	158	—	—	—	—

Similar Players

Other ATP players with comparable peak level, era, career record, and career scale.

Gauthier Onclin's most statistically similar ATP players
Player	Country	Peak Rank	Peak Elo	M	W	L	Win %	Years	Match Log
Juan Carlos Prado Angelo	BOL	151	1,555	3	1	2	33.3%	2026–2026	Match log
Clement Tabur	FRA	159	1,600	8	3	5	37.5%	2025–2026	Match log
Stefanos Sakellaridis	GRE	136	1,551	3	1	2	33.3%	2025–2026	Match log
Rei Sakamoto	JPN	148	1,640	7	2	5	28.6%	2025–2026	Match log
Vitaliy Sachko	UKR	156	1,543	11	3	8	27.3%	2020–2026	Match log
Justin Engel	GER	180	1,588	12	4	8	33.3%	2024–2026	Match log
Mark Lajal	EST	145	1,642	8	3	5	37.5%	2023–2026	Match log
Lautaro Midon	ARG	189	1,552	3	1	2	33.3%	2026–2026	Match log
Ugo Blanchet	FRA	139	1,663	13	4	9	30.8%	2024–2026	Match log
Gonzalo Bueno	PER	160	1,553	2	1	1	50.0%	2026–2026	Match log
Filip Cristian Jianu	ROU	210	1,508	3	1	2	33.3%	2025–2026	Match log
Colton Smith	USA	133	1,620	10	3	7	30.0%	2025–2026	Match log

Frequently Asked Questions

How old is Gauthier Onclin?: Gauthier Onclin is 25 years old, born on February 26, 2001.
Which country does Gauthier Onclin represent?: Gauthier Onclin represents Belgium in TennisDB's ATP records.
How tall is Gauthier Onclin?: Gauthier Onclin is 180 cm / 5'11".
Does Gauthier Onclin use a one-handed or two-handed backhand?: Gauthier Onclin uses a two-handed backhand.
Is Gauthier Onclin left-handed or right-handed?: Gauthier Onclin plays right-handed.
How many Grand Slams has Gauthier Onclin won?: Gauthier Onclin has not won a Grand Slam title.
How many Masters 1000 titles has Gauthier Onclin won?: TennisDB does not group any of Gauthier Onclin's titles under the modern Masters 1000 category.
What is Gauthier Onclin's highest ATP ranking?: Gauthier Onclin's career-high ATP singles ranking is world No. 158, first achieved on August 24, 2026.
What is Gauthier Onclin's career win-loss record?: Gauthier Onclin has a career ATP singles record of 1 wins and 2 losses (33.3%).
How much career prize money has Gauthier Onclin earned?: Gauthier Onclin has earned at least $671,749 in career prize money from professional tennis.
Which seasons of Gauthier Onclin's career appear in TennisDB?: Gauthier Onclin appears in TennisDB's ATP main-tour match records from 2025 through 2026.
Who has Gauthier Onclin faced most often?: Gauthier Onclin's most frequent opponent is Giovanni Mpetshi Perricard, with a head-to-head record of 0–1 across 1 meeting.