Quinn Vandecasteele vs Bryce NakashimaTiburon Qualifying Round of 16

Tiburon · CHALLENGER · Qualifying Round of 16
#438ATP
1383ELO
1368Hard ELO
$28kYTD
$95kCAREER
24 yrs · 191 cm · Right-handed
Last 10
WLWWLWWWLL
Sets
Monday, 14 September 2026 ·
hard
KENNEDY-GROSSMAN COURT · 1st on
#872ATP
$25kYTD
$41kCAREER
22 yrs
Last 10
WWWWWWLWLL
Vandecasteele Q.
vs
Nakashima B.

Quinn Vandecasteele faces Bryce Nakashima in the Tiburon qualifying round of 16 on hard. Quinn Vandecasteele holds the paper edge — ranked #438, leading the head-to-head 1–0. Recent hard form is closely matched.

Win Probability

Pre-match · updated 12:50 UTC
Vandecasteele Q.55%
Nakashima B.45%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Toss-up · Too close to call

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

Key context

Common opponents

Last 12 months
No common opponents in the last 12 months.
Includes tour-level, 125s, qualifying and team events (⚑). Walkovers excluded. Describes past results in different contexts — not a prediction.

Umpiry Score

Pre-match
5.5
Slight disadvantageUmpiry ScorePartial · surface data limited
  • Back-to-back day (−0.5)
4.6
Heavy underdogUmpiry ScorePartial · surface data limited
  • Back-to-back day (−0.5)
Form & Matchup
7.0Leads 1–0 on hard
H2H
3.0Trails 0–1 on hard
6.97 of last 10 on hard
Surface form
3.92 of last 6 on hard
Fatigue & Travel
5.5Won 59% in USA (100)
Country comfort
5.6Won 60% in USA (80)
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.

22 vs 1 matches

Statistics

This season
1st serve in·Slight edge
57%
64%
1st serve points won·Even
71%
69%
2nd serve points won·Even
48%
44%
Service points won·Even
61%
60%
Return points won·Slight edge
40%
30%
Break points saved·Dominant
59%
0%
Aces / match·Dominant
5.4
0.0
Double faults / match·Dominant
3.5
2.0

Averages over each player's completed matches in the selected window (22 vs 1). ATP, WTA & Challenger.

Serve vs return

This season
Vandecasteele Q.serving82% hold

wins 64% of points on serve vs Nakashima B.

Nakashima B.serving75% hold

wins 61% of points on serve vs Vandecasteele Q.

Serve advantage — Vandecasteele Q.

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

Freshness

Recent load
Freshness·Even
88
88

Vandecasteele Q.: 1 day rest · 1 match, 19 games (7d) · Nakashima B.: 1 day rest · 1 match, 18 games (7d). Higher means fresher. About

When it starts

1st on KENNEDY-GROSSMAN COURT · Starts At 10:00 · up next on court

  1. 1Vandecasteele Q. v Nakashima B.This match
  2. 2Seggerman R. v Rybakov A.
  3. 3Wolf J. v Emanuel Ambrogi L.
  4. 4Sell K. v Mmoh M.

Conditions

Court speed
Mediumbalanced pace
SlowFast
Weather forecast
20°CClear
Wind 10 km/hHumidity 66%

Head to head

10
DateTournamentRoundSurfaceWinnerScore
2023-11-14M25 Columbus 1R32hardQuinn Vandecasteele6-2 5-7 6-4

Draw