Guillaume Dalmasso vs Leonardo Rossi

UMPIRY

M15 OffenbachQuarter-finalHardThu 15 Oct · 12:30

Guillaume Dalmasso(6)ATP #639 · FRA47%

VSToss-up

Leonardo Rossi(4)ATP #545 · ITA53%

Win probabilityWho is more likely to winToss-up

47%53%

No meaningful edge. Serve performance in the first set is the likeliest tiebreaker.

Umpiry ScoreMatchup strength, 0–10 · not a probability

Dalmasso G.3.9/10

Heavy underdogBased on 5/6 signal groups5/6

Rossi L.4.6/10

Heavy underdogBased on 5/6 signal groups5/6

Why

Surface form5 of last 10 on hardSupports Rossi L.

Recent runLost last 5Informative

Head-to-headNo prior meetingsBoth players

This eventDidn't play here last yearBoth players

ELO1 572

Hard ELO1 568

Last 105–5

Age24

EarningsCareer $39K2026 $13K

ELO1 579

Hard ELO1 595

Last 106–4

Age24

EarningsCareer $57K2026 $13K

Guillaume Dalmasso faces Leonardo Rossi in the M15 Offenbach quarter-final on hard. Leonardo Rossi holds the paper edge — ranked #545. Recent hard form is closely matched.

Key context

Last match: Guillaume Dalmasso handed Lewie Lane a second-set bagel in a 6–4 6–0 win.
Fatigue load: Both played two three-setters in the past fortnight — neither arrives fresh.
Surface form: Guillaume Dalmasso 5 of 10, Leonardo Rossi 6 of 10 on hard recently — Leonardo Rossi 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

Dalmasso G.Rossi L.

FormLast 10 matches each · 2026

Win–loss5–56–4

Season win rate56% (20–16)59% (17–12)

RatingUmpiry ELO

Overall ELO15721579

Hard-court ELO15681595

Serve vs returnLast 26 vs 27 matches

1st-serve points won70%70%

Return points won39%39%

Aces / match4.35.1

ClutchLast 26 vs 27 matches

Break points saved61%59%

Draw

Odds

Conditions

12:30 local

SurfaceHard

Forecast10°C · Overcast

Wind6 km/h

Humidity96%

Cite this

Umpiry, "Guillaume Dalmasso vs Leonardo Rossi — M15 Offenbach Quarter-final", https://umpiry.com/match/2026-10-15/dalmasso-vs-rossi-m15-offenbach-qf?utm_source=cite (as of 15 October 2026).