Zack Vialla vs Samuel Heredia, Champaign 2026, Qualifying R1

ScheduledThe Parastaran Court

Zack Vialla

ATP: 1253L W L L W

——

Samuel Heredia

ATP: 629L W L L L

Atkins Tennis CenterUrbana, USA

Indoor hard

Court speed

What is court speed?

How much the court helps the server, judged from aces and serve points won and adjusted for who played. 100 is the average ATP tournament court that season.

Very slow< 92Monte Carlo, Rome
Slow92–97Roland Garros, Indian Wells
Average97–103US Open, Dubai
Fast103–108Wimbledon, Shanghai
Very fast108+Basel

Challenger and ITF courts usually read lower: partly the venues, partly the balls and conditions at those levels.

How court speed works

101.7Average

Venue average

Altitude231 mLow

Player comparison

Zack ViallaSamuel Heredia

#1312 → #1253Ranking, last 12 months#892 → #629

#1253
Ranking: #629; #1244
Career high: #623; 5–4
2026 record: 26–29; 5–4
2026 on hard: 5–8; 0
Titles: 0; 21
Age: 20; 185 cm
Height: 191 cm; Right
Plays: Right

Head to head

First meetingZack Vialla and Samuel Heredia haven’t played each other on the recorded tours.

Form and path

Zack Vialla2–4

ChampaignHard

BrisbaneHard

LRound of 32
Jeremy Beale
Sets won: 2Set 1: 6Set 2: 6⁵Set 3: 7
Zack Vialla
Sets won: 1Set 1: 3Set 2: 7Set 3: 5

BrisbaneHard

LSemifinal
Matt Hulme
Sets won: 2Set 1: 6Set 2: 6⁴Set 3: 7
Zack Vialla
Sets won: 1Set 1: 2Set 2: 7Set 3: 6⁵

Samuel Heredia1–5

Charlottesville CHHard

Cali CHClay

LRound of 32
Matias Soto
Sets won: 2Set 1: 7Set 2: 4Set 3: 6
Samuel Heredia
Sets won: 1Set 1: 6⁸Set 2: 6Set 3: 2

Santa Cruz De La Sierra 2 CHClay

LQualifying R1
Federico Zeballos
Sets won: 2Set 1: 6Set 2: 3Set 3: 6
Samuel Heredia
Sets won: 1Set 1: 4Set 2: 6Set 3: 3

Antofagasta CHClay

LRound of 32
Eduardo Ribeiro
Sets won: 2Set 1: 6Set 2: 6
Samuel Heredia
Sets won: 0Set 1: 3Set 2: 4

Curitiba CHClay

LRound of 32
Joao Eduardo Schiessl
Sets won: 2Set 1: 6Set 2: 7
Samuel Heredia
Sets won: 0Set 1: 4Set 2: 5

Ranking points at stake

Vialla#1250 · 9 ptsHeredia#634 · 58 pts0points defending here0

Nov 15

Nov 22

Nov 29

Dec 6

Dec 13

Dec 20

Dec 27

Jan 3

Next 8 weeks with Pro

ATP rankings breakdown, Sep 28

Match research

Pro

Everything that shapes this match: each player’s run-in and travel, records side by side, and results against similar opponents and in similar conditions. Better information, better-informed decisions.

Run-inEvery match in the last 28 days, rest days and travel between venues.
Tale of the tapeRecords and serve numbers side by side, filtered by period and surface.
Record by opponent rankingHow each player does against the top 10, top 50 or any ranking range.
Similar conditionsResults in comparable heat, humidity, wind and altitude before scheduled matches.

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