Gauthier Onclin vs Jan Lennard Struff

UMPIRY

European Open - BrusselsR16HardWed 21 Oct · ~19:30CENTRE COURT · After 4 matches

Gauthier OnclinATP #178 · BEL41%

VSSlight edge · Struff J.

Jan Lennard StruffATP #58 · GER59%

Win probabilityWho is more likely to winSlight edge · Struff J.

41%59%

Struff J. favoured, but within the range where form on the day decides.

Umpiry ScoreMatchup strength, 0–10 · not a probability

Onclin G.4.9/10

Heavy underdog

Struff J.5.3/10

Clear underdog

Why

Surface+82 Hard Elo edgeSupports Struff J.

Overall ratingOverall Elo 1694Supports Struff J.

Long matches1 three-setter in 14 daysSupports Struff J.

Head-to-headNo prior meetingsBoth players

This eventDidn't play here last yearBoth players

ELO1 735

Hard ELO1 655

Last 102–8

Age25

Height180 cm

PlaysRight

EarningsCareer $672K2026 $155K

ELO1 953

Hard ELO1 729

Last 105–5

Age36

Height193 cm

PlaysRight

EarningsCareer $13.6M2026 $1.2M

Gauthier Onclin faces Jan Lennard Struff in the European Open - Brussels round of 16 on hard. Jan Lennard Struff holds the paper edge — ranked #58, a roughly 80-point hard Elo advantage.

Key context

Freshness: Gauthier Onclin comes in with 2 days of rest and 106 games in 14d, vs Jan Lennard Struff's 10 and 49.
Last match: Jan Lennard Struff won all two sets in tiebreaks against Marcos Giron.
Surface form: Gauthier Onclin 2 of 9, Jan Lennard Struff 5 of 9 on hard recently — Jan Lennard Struff the sharper of late.

Common opponents

0 shared · last 12 months

No common opponents in the last 12 months. Surface form and ELO carry more weight here.

Head-to-head

They have not met before.

Evidence

Onclin G.Struff J.

FormLast 10 matches each · 2026

Win–loss2–85–5

Season win rate54% (26–22)45% (20–24)

RatingUmpiry ELO

Overall ELO17351953

Hard-court ELO16551729

Serve vs returnLast 45 vs 37 matches

1st-serve points won70%75%

Return points won40%34%

Aces / match2.010.5

ClutchLast 45 vs 37 matches

Break points saved57%64%

When it starts

CENTRE COURT · After 4 matches · Followed by

1Damm M. v Cerundolo F.Starts at 11:30
2Navone M. v Griekspoor T.Followed by
3Chidekh C. v Fearnley J.Followed by
4Goffin D. v Bertola R.Not before 18:00
5This match: Onclin G. v Struff J.This match

Draw

Odds

Conditions

CENTRE COURT · ~19:30 local

SurfaceHard

Forecast11°C · Overcast

Wind25 km/h

Humidity72%

Freshness

Last 7 & 14 days

Onclin G.Struff J.

2Days since last match10

3Matches · 7 days0

79Games · 7 days0

4Matches · 14 days2

106Games · 14 days49

Green marks the fresher player.

Cite this

Umpiry, "Gauthier Onclin vs Jan Lennard Struff — European Open - Brussels Round of 16", https://umpiry.com/match/2026-10-21/onclin-vs-struff-european-open-brussels-r16?utm_source=cite (as of 21 October 2026).