Zsombor Piros vs Stefano NapolitanoZug Round of 32

Zug · CHALLENGER · Round of 32
#120ATP
1661ELO
1621Clay ELO
$192kYTD
$1.0MCAREER
26 yrs · 180 cm · Right-handed
Last 10
WWWWWWWWWW
Sets
Monday, 20 July 2026 ·
clay
REDCOMET ARENA · 3rd on
#240ATP
1528ELO
1520Clay ELO
31 yrs · 196 cm · Right-handed
Last 10
LWWLLWLLLW
Piros Z.
vs
Napolitano S.

Zsombor Piros faces Stefano Napolitano in the Zug round of 32 on clay. Zsombor Piros is the paper favourite — ranked #120, a roughly 100-point clay Elo advantage — but Stefano Napolitano has won their only previous meeting, though none on clay.

Win Probability

Pre-match · updated 15:50 UTC
Piros Z.69%
Napolitano S.31%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Clear favourite · Piros Z. clearly ahead, but no certainty

Calibrated model · 63% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.

Key context

Umpiry Score

Pre-match
7.8
Dominant favouriteUmpiry Score
5.4
Clear underdogUmpiry Score
Form & Matchup
6.3+101 Clay Elo edge
Surface ELO
3.7Clay Elo 1520
6.7Overall Elo 1661
ELO gap
3.3Overall Elo 1528
5.0First meeting on clay
H2H
5.0First meeting on clay
10.010 of last 10 on clay
Surface form
4.24 of last 10 on clay
10.010-match win streak
Win streak
0.0
Fatigue & Travel
7.01 three-setter in 14 days
3-set count
4.02 three-setters in 14 days
Context
5.0Didn't play here last year
Defending pts
5.0Didn't play here last year

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.

29 vs 26 matches

Statistics

This season
1st serve in·Even
60%
61%
1st serve points won·Even
70%
73%
2nd serve points won·Slight edge
52%
58%
Service points won·Even
63%
67%
Return points won·Even
40%
37%
Break points saved·Slight edge
69%
58%
Aces / match·Slight edge
3.8
4.5
Double faults / match·Slight edge
2.3
1.6

Averages over each player's completed matches in the selected window (29 vs 26). ATP, WTA & Challenger.

Serve vs return

This season
Piros Z.serving78% hold

wins 62% of points on serve vs Napolitano S.

Napolitano S.serving80% hold

wins 63% of points on serve vs Piros Z.

Even serve battle

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·Clear edge
56
33
Break points saved·Slight edge
84
77
Break points won·Clear edge
32
13
Deciding sets·Dominant
85
55
Tiebreaks·Clear edge
42
26

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

Freshness

Recent load
Freshness·Clear edge
81
66

Piros Z.: 7 days rest · 1 match, 20 games (7d) · Napolitano S.: 2 days rest · 3 matches, 78 games (7d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast
Weather forecast
23°CMainly clear
Wind 9 km/hHumidity 42%

Head to head

01
DateTournamentRoundSurfaceWinnerScore
2024-07-01WimbledonQ1grassStefano Napolitano1-6 6-2 7-6

Draw