Karen Khachanov vs Alexander Blockx — US Open Quarter-final

US Open · ATP · Quarter-final
Karen Khachanov
RUS
Karen Khachanov
#50ATP
1828ELO
1783Hard ELO
30 yrs · 198 cm · Right-handed
Last 10
WWWWLLLLWW
—
Sets
Wednesday, 9 September 2026 ·
hard
Arthur Ashe Stadium · 3rd on
BEL28
Alexander Blockx
#34ATP
1906ELO
1793Hard ELO
21 yrs · 191 cm · Right-handed
Last 10
WWWWLWLWLW
Khachanov K.
vs
Blockx A.

Around the match

  • Blockx felt physically unwell during his Round of 16 win, requiring medication and experiencing post-match pain, raising concerns about his fitness for the Khachanov quarterfinal.

    Umpiry summary — not a quote

    Blockx A.Last Word On Sports ↗

Quotes belong to their sources, linked above. Lines marked “Umpiry summary” are written by Umpiry from the linked article, not quoted from it.

Win Probability

Pre-match · updated 14:50 UTC
Khachanov K.51%
Blockx A.49%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Toss-up · Too close to call

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

Common opponents

Last 12 months
8 common opponents · Khachanov K. 3–5 · Blockx A. 7–3
Both won · different surfaces (Hard × Clay)▾
Includes tour-level, 125s, qualifying and team events (⚑). Walkovers excluded. Describes past results in different contexts — not a prediction.

Umpiry Score

Pre-match
Khachanov K.
5.2
Clear underdogUmpiry Score
  • Back-to-back day (−0.5)
Blockx A.
6.8
Slight advantageUmpiry Score
Form & Matchup
4.9Hard Elo 1783
Surface ELO
5.1+10 Hard Elo edge
4.0Overall Elo 1828
ELO gap
6.0Overall Elo 1906
5.0No prior meetings
H2H
5.0No prior meetings
6.05 of last 10 on hard
Surface form
7.57 of last 10 on hard
7.04-match win streak
Win streak
7.04-match win streak
Fatigue & Travel
0.04 three-setters in 14 days
3-set count
0.04 three-setters in 14 days
Context
6.0Reached the R64 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.

27 vs 37 matches

Statistics

This season
Khachanov K.Blockx A.
1st serve in·Slight edge
66%
59%
1st serve points won·Even
75%
77%
2nd serve points won·Even
54%
52%
Service points won·Even
68%
67%
Return points won·Even
35%
37%
Break points saved·Even
66%
68%
Aces / match·Clear edge
8.5
6.9
Double faults / match·Clear edge
1.7
2.6

Averages over each player's completed matches in the selected window (27 vs 37). ATP, WTA & Challenger.

Serve vs return

This season
Khachanov K.serving90% hold

wins 70% of points on serve vs Blockx A.

Blockx A.serving91% hold

wins 71% of points on serve vs Khachanov K.

Serve-dominated — both hold easily, expect tiebreaks

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
Khachanov K.Blockx A.
Clutch Rating·Slight edge
81
71
Break points saved·Even
98
97
Break points won·Dominant
81
27
Deciding sets·Clear edge
82
95
Tiebreaks·Slight edge
79
87

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

Freshness

Recent load
Khachanov K.Blockx A.
Freshness·Slight edge
47
52

Khachanov K.: 1 day rest · 3 matches, 117 games (7d) · Blockx A.: 2 days rest · 3 matches, 113 games (7d). Higher means fresher. About

When it starts

3rd on Arthur Ashe Stadium · 2 matches still to finish ahead

  1. 1WZheng Q. v Rybakina E.
  2. 2WAndreeva M. v Gauff C.
  3. 3MKhachanov K. v Blockx A.This match
  4. 4MZverev A. v Van De Zandschulp B.

Conditions

Court speed
Medium-fastrewards aggression
SlowFast
Weather forecast
26°COvercast
Wind 17 km/hHumidity 67%

Head to head

No previous meetings on record.

Draw