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Katherine SebovPhoto: si.robi, CC BY-SA 2.0, via Wikimedia Commons (cropped)

TennisWTARight-handed

Katherine Sebov

CanadaAge and results

Katherine Sebov is a tennis player on the WTA Tour who reached a career-high ranking of No. 136 on April 10, 2023.

13 WTA Tour matches

Updated

2026 record1-2Career highNo. 136Apr 10, 2023

About Katherine Sebov

Born on January 5, 1999, in Toronto, Ontario, CA, Katherine Sebov represents Canada on the WTA Tour and plays right-handed with a two-handed backhand. Sebov turned pro in 2016, and Oksana Petrovska is her coach. On April 10, 2023, Sebov reached a career-high WTA Tour ranking of No. 136.

Agatha Research DeskUpdated Oct 17, 2026

Match history13

Every WTA Tour, Grand Slam and Olympic main-draw match in our records, newest first. A walkover is listed but never counted in a record.

2026: 10-12

DateTournamentRoundOpponentResultScoreSurface
Sep 22Eupago Porto OpenRound 1Gabriela KnutsonL4-6, 2-6Hard
Sep 15Caldas da Rainha Ladies OpenRound 1Victoria Jimenez KasintsevaL4-6, 1-6Hard
Aug 25US OpenQualifying 1st RoundJulia AvdeevaL6-7(5), 1-6Hard
Aug 4National Bank OpenRound 2Marta KostyukL6-7(4), 0-6Hard
Aug 2National Bank OpenRound 1Aoi ItoW6-3, 6-4Hard
Jul 27The Memphis ClassicRound 1Elvina KalievaL1-6, 6-7(3)Hard
Jul 26The Memphis ClassicQualifying FinalAran Teixido GarciaW6-1, 7-5Hard
Jul 25The Memphis ClassicQualifying 1st RoundCamila SoaresW6-1, 6-0Hard
Jul 9Cerity Partners Hall of Fame Open for the Van Alen CupRound 2Tatjana MariaL3-6, 3-6Grass
Jul 8Cerity Partners Hall of Fame Open for the Van Alen CupRound 1Cadence BraceW6-2, 6-2Grass
Jun 25WimbledonQualifying FinalIryna ShymanovichL6-4, 3-6, 6-7(5)Grass
Jun 24WimbledonQualifying 2nd RoundNoma Noha AkugueW6-4, 5-7, 7-5Grass
Show 10 more
Jun 23WimbledonQualifying 1st RoundJazmin OrtenziW4-6, 6-3, 6-2Grass
Jun 14Figueira Da Foz Ladies OpenQualifying 1st RoundAllura ZamarripaL3-6, 3-6Hard
May 19Roland GarrosQualifying 1st RoundViktoria HruncakovaL0-6, 6-7(3)Clay
May 5Istanbul OpenRound 1Berfu CengizL4-6, 6-1, 0-6Clay
May 4Istanbul OpenQualifying FinalDalila JakupovicW7-5, 6-3Clay
Feb 20Dow Tennis ClassicQuarterfinalMary StoianaL3-6, 4-6Hard
Feb 18Dow Tennis ClassicRound 2Kayla CrossW6-2, 6-2Hard
Feb 16Dow Tennis ClassicRound 1Ashlyn KruegerW7-5, 2-6, 7-5Hard
Feb 1Ostrava OpenQualifying FinalMona BarthelL2-6, 7-5, 4-6Hard
Jan 31Ostrava OpenQualifying 1st RoundAnna-Lena FriedsamW7-5, 6-2Hard

How she is doing nowThrough Sep 22

2026 record1-2hard 1-2
Last 104-6LLLLWLWWLWNewest first. Four losses in a row.

CareerPro since 2016

10years2016 to 2026
  1. 2021First WTA matchLost to Marta Kostyuk, WTA Chicago Womens Open
  2. 2023Career high No. 136Apr 10, 2023
  3. Aug 4, 2026Latest matchLost to Marta Kostyuk, National Bank Open

Grand Slam titles

AO0Round 1 (2023)0-1 in our records
RG0-
WIM0-
USO0-

First WTA match

Aug 22, 2021: lost to Marta Kostyuk 0-6, 3-6WTA Chicago Womens Open, on hard

Latest match

Aug 4, 2026: lost to Marta Kostyuk 6-7, 0-6National Bank Open, Round 2, on hard court

ITF finals

ITF: 15 singles finals, 6 won; 1 doubles final, 1 won. From 2017 to 2026.

Singles

  1. L
    Oct 2026Runner-up at Tevlin Women's Challenger, Canada (W75, indoor hard), losing to Reese Brantmeier 3-6, 1-6.
  2. L
    Apr 2026Runner-up at ITF Calvi, France (W75, hard), losing to Jeline Vandromme 0-6, 0-6.
  3. W
    Dec 2025Won the title at ITF Monastir, Tunisia (W35, hard), beating Nahia Berecoechea 6-4, 6-1.
  4. W
    Jan 2025Won the title at ITF Naples, United States (W35, hard), beating Jessica Pieri 6-2, 6-0.
  5. W
    Oct 2023Won the title at Challenger de Saguenay, Canada (W60, indoor hard), beating Fanny Stollar 6-4, 6-4.
  6. L
    Jul 2023Runner-up at Championnats de Granby, Canada (W100, hard), losing to Kayla Day 4-6, 6-2, 5-7.
  7. W
    Mar 2023Won the title at ITF Toronto, Canada (W25, indoor hard), beating Himeno Sakatsume 6-4, 7-6(4).
  8. W
    Dec 2022Won the title at ITF Tauranga, New Zealand (W25, hard), beating Michaela Bayerlova 6-0, 6-4.
Show 7 more
  1. L
    Oct 2022Runner-up at Challenger de Saguenay, Canada (W60, indoor hard), losing to Karman Thandi 6-3, 4-6, 3-6.
  2. L
    Jan 2022Runner-up at ITF Monastir, Tunisia (W25, hard), losing to Han Na-lae 3-6, 2-6.
  3. L
    Jul 2019Runner-up at ITF Saskatoon, Canada (W25, hard), losing to Maddison Inglis 4-6, 6-2, 4-6.
  4. L
    Jun 2019Runner-up at ITF Figueira da Foz, Portugal (W25+H, hard), losing to Ipek Soylu 7-6(2), 6-7(5), 3-6.
  5. W
    Oct 2018Won the title at Challenger de Saguenay, Canada ($60,000, indoor hard), beating Quirine Lemoine 7-6(10), 7-6(4).
  6. L
    Mar 2018Runner-up at ITF Toyota, Japan ($25,000, hard), losing to Dejana Radanovic 4-6, 6-3, 4-6.
  7. L
    Jul 2017Runner-up at Challenger de Granby, Canada ($60,000, hard), losing to Cristiana Ferrando 2-6, 3-6.

Doubles

  1. W
    Dec 2021Won the title at ITF Jablonec nad Nisou, Czech Republic (W25, indoor carpet) with Maja Chwalinska, beating Lucie Havlickova and Linda Klimovicova 7-5, 6-4.

Most often against

The players she has met most in our records, with the head-to-head.

Ashlyn Krueger2 meetings
2-0Sebov leads

Last: Feb 16, 2026, Dow Tennis Classic Round 1, won

Katie Volynets2 meetings
0-2Sebov trails

Last: Mar 31, 2025, Credit One Charleston Open Round 1, lost

Linda Noskova2 meetings
1-1All square

Last: May 17, 2023, Trophee Clarins Round 2, lost

Marta Kostyuk2 meetings
0-2Sebov trails

Last: Aug 4, 2026, National Bank Open Round 2, lost

Nao Hibino2 meetings
0-2Sebov trails

Last: Aug 4, 2024, National Bank Open Qualifying 1st Round, lost

Peyton Stearns2 meetings
0-2Sebov trails

Last: Aug 5, 2023, National Bank Open Qualifying 1st Round, lost

Sources and updates

Results and schedules come from Agatha's own records of the WTA Tour.

Updated Nov 11, 2026, 7:24 AM ET. Results and form refresh after every match; biography facts are checked weekly.