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Deuce.

ATP TourUnited States

Stefan Kozlov

Age 28 · Right-handed · 6' 0" · Pro since 2013

Season
67–89
42.9% win rate
Career
9–26
25.7% win rate
Titles
0
Singles
Prize money
$1.1M
Career

Recent form

1 loss in a row

  1. WBeat Raphael Perot
  2. LLost to James Duckworth
  3. LLost to Alex Rybakov
  4. LLost to Nick Hardt
  5. WBeat Daniil Glinka
  6. WBeat Yibing Wu
  7. LLost to Jacob Fearnley
  8. LLost to Yi Zhou
  9. LLost to Alan Magadan
  10. LLost to Zachary Svajda
  11. WBeat Aidan Mayo
  12. LLost to Harry Wendelken

Oldest to newest. Hover a result for the opponent.

By surface

Strongest on clay

  • Hardmost played395840%
  • Clay181555%
  • Grass91341%
  • Indoor1325%

1635#588 on tour

Peak 1778 in 2025 · from 156 rated matches

  • Hard

    1647+11 vs overall

    97 matches

  • Clay

    1683+47 vs overall

    33 matches

  • Grass

    1676+41 vs overall

    22 matches

Computed from every completed ATP singles match since 2008, not from ranking points: beating a strong player is worth more than beating a weak one. A surface figure is this player’s overall rating plus an adjustment learned only from their matches on that surface.

Match results

25 matches· 2022

  • LJ.J. Wolf2022· Cymbiotika San Diego Open · Round 12-6, 6-7(6)
  • LDaniil Medvedev2022· US Open · Round 12-6, 4-6, 0-6
  • LDusan Lajovic2022· Cincinnati Open · Qualifying 1st Round3-6, 5-7
  • LJack Draper2022· Mubadala DC Open · Round 15-7, 2-6
  • LRamkumar Ramanathan2022· Atlanta Open · Qualifying 1st Round0-6, 1-6
  • LSteve Johnson2022· Cerity Partners Hall of Fame Open for the Van Alen Cup Presented by the Margaret Fund · Round 15-7, 3-6
  • LDiego Schwartzman2022· Wimbledon · Round 13-6, 2-6, 2-6
  • LDennis Novak2022· Wimbledon · Qualifying Final5-7, 4-6, 7-5, 6-3, 3-6
  • WDominic Stricker2022· Wimbledon · Qualifying 2nd Round7-6(9), 4-6, 6-3
  • WEvan Furness2022· Wimbledon · Qualifying 1st Round7-5, 6-3
  • LSteve Johnson2022· HSBC Championships · Qualifying 1st Round0-6, 0-6
  • LMatthew Ebden2022· Libéma Open · Qualifying 1st Round4-6, 4-6
  • LNino Serdarusic2022· Roland Garros · Qualifying 1st Round5-7, 0-6
  • LMitchell Krueger2022· Miami Open presented by Itau · Qualifying 1st Round2-6, 2-6
  • LHolger Rune2022· BNP Paribas Open · Qualifying Final4-6, 2-6
  • WSebastian Sec2022· BNP Paribas Open · Qualifying 1st Round6-3, 6-7(4), 6-2
  • LRafael Nadal2022· Abierto Mexicano Telcel presentado por HSBC · Round 20-6, 3-6
  • WGrigor Dimitrov2022· Abierto Mexicano Telcel presentado por HSBC · Round 17-6(8), 5-7, 6-3
  • LTommy Paul2022· Delray Beach Open · Quarterfinal3-6, 1-6
  • WSteve Johnson2022· Delray Beach Open · Round 26-1, 6-3
  • WEmilio Gomez2022· Delray Beach Open · Round 14-6, 7-5, 6-3
  • WBjorn Fratangelo2022· Delray Beach Open · Qualifying Final6-3, 1-0ret.
  • WGo Soeda2022· Delray Beach Open · Qualifying 1st Round7-5, 6-2
  • LMatteo Berrettini2022· Australian Open · Round 21-6, 6-4, 4-6, 1-6
  • WJiri Vesely2022· Australian Open · Round 17-5, 6-3, 6-4