Daniel Altmaier vs Luciano DarderiBastad Round of 16

Bastad · ATP · Round of 16
#60ATP
1734ELO
1693Clay ELO
$574kYTD
$5.4MCAREER
27 yrs · 188 cm · Right-handed
Last 10
WLLWLWWWLL
Sets
Wednesday, 15 July 2026 ·
clay
#18ATP
1835ELO
1836Clay ELO
$1.3MYTD
$4.7MCAREER
24 yrs · 183 cm · Right-handed
Last 10
LLWLWLWWLW
Altmaier D.
vs
Darderi L.

Daniel Altmaier faces Luciano Darderi in the Bastad round of 16 on clay. Luciano Darderi is the paper favourite — ranked #18, defending the title, a roughly 140-point clay Elo advantage — but Daniel Altmaier has won their only previous meeting, though none on clay.

Win Probability

Pre-match · updated 17:20 UTC
Altmaier D.31%
Darderi L.69%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Clear favourite · Darderi L. clearly ahead, but no certainty

Calibrated model · 65% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.

Key context

Umpiry Score

Pre-match
4.8
Heavy underdogUmpiry Score
  • Back-to-back day (−0.5)
6.2
Even matchUmpiry Score
  • Surface jump clay↔grass (−0.8)
Form & Matchup
3.2Clay Elo 1693
Surface ELO
6.8+143 Clay Elo edge
3.7Overall Elo 1734
ELO gap
6.3Overall Elo 1834
3.0Trails 0–1 on clay
H2H
7.0Leads 1–0 on clay
5.15 of last 10 on clay
Surface form
6.37 of last 10 on clay
Win streak
0.0Lost last 2
Fatigue & Travel
7.01 three-setter in 14 days
3-set count
Surface transition
3.0Grass → Clay
Context
5.0Didn't play here last year
Defending pts

The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.

Form trajectory

Direction of recent form — results vs Elo expectation blended with serve/return vs each player's baseline, over the last few months. About

22 vs 24 matches

Statistics

This season
1st serve in·Slight edge
63%
57%
1st serve points won·Slight edge
69%
74%
2nd serve points won·Even
46%
50%
Service points won·Even
60%
63%
Return points won·Even
36%
38%
Break points saved·Even
55%
56%
Aces / match·Slight edge
5.5
6.5
Double faults / match·Even
2.2
2.5

Averages over each player's completed matches in the selected window (22 vs 24). ATP, WTA & Challenger.

Serve vs return

This season
Altmaier D.serving70% hold

wins 59% of points on serve vs Darderi L.

Darderi L.serving80% hold

wins 63% of points on serve vs Altmaier D.

Serve advantage — Darderi L.

Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About

Clutch

Under pressure
Clutch Rating·Slight edge
71
78
Break points saved·Even
96
94
Break points won·Clear edge
34
50
Deciding sets·Even
92
93
Tiebreaks·Clear edge
82
94

Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About

Serve & return on clay

Altmaier D.Darderi L.
40
Serve
46
11
Return
67

Per-surface Serve / Return Rating (0–100, percentile within the clay field, opponent-adjusted over 52 weeks). About

Freshness

Recent load
Freshness·Even
96
100

Altmaier D.: 13 days rest · 1 match (14d) · Darderi L.: 15 days rest. Higher means fresher. About

Conditions

Court speed
Slowlow bounce, long rallies
SlowFast
Weather forecast
23°CClear
Wind 3 km/hHumidity 58%

Head to head

10
DateTournamentRoundSurfaceWinnerScore
2024-11-04BelgradeR32hardDaniel Altmaier7-6(1) 6-3