Waltert S.

starts, all surfaces, 2019 to 2026

No. 87

846 pts, as of Aug 15, 2026

01/Record by surface

each with its own count; nothing here is blended

Hard

3-7

10 starts, 2019 to 2026. 7 of 23 completed sets won

Clay

10-15

25 starts, 1 ended by retirement, 2019 to 2026. 24 of 59 completed sets won

Grass

0-2

2 starts, 2019 to 2026. 0 of 4 completed sets won

37 starts on all surfaces, 1 ended by retirement and kept. A count, not a record: the three records above are never added.

02/Round reached

24 tournaments entered

Stage	Entries ending here	Record at this round
Champion	0 of 24
Quarterfinal	2 of 24	0-2 in 2
2nd Round	9 of 24	2-9 in 11
1st Round	13 of 24	11-13 in 24

An entry is one tournament in one season; its stage is the last round the draw shows her in, and a champion’s is the trophy. The record at a round counts matches started at that round, so a walkover moves her on without a line here.

03/By level

5 levels

Level	Starts	Hard	Clay	Grass
WTA250	20	1-3	6-10	none
WTA1000	7	1-2	2-2	none
Grand Slam	6	0-1	1-2	0-2
WTA500	2	1-1	none	none
International	2	none	1-1	none

04/By season

2019 to 2026

Season	Starts	Hard	Clay	Grass	Rank, newest row
2026	15	2-4	2-6	0-1	87
2025	5	1-1	2-1	none	127
2024	4	0-1	1-2	none	249
2023	5	0-1	1-2	0-1	132
2022	5	none	3-2	none	120
2021	1	none	0-1	none	235
2019	2	none	1-1	none	562

Each season is the same count over that season’s matches alone, each surface with its own starts. A season with a start on no grass court says none rather than 0-0. December openers file to the season they open. Finals counts the finals that crowned a champion, a walkover final among them, so Titles is a subset of it and a final lost shows in the gap; the surface columns count starts, which a walkover is not.

05/Head to head

34 opponents faced

Opponent	Meetings	Record	Hard	Clay	Grass	Span
Tomljanovic A.	2	1-1	1-1	none	none	2025 to 2026	Every meeting
Sherif M.	2	0-2	none	0-2	none	2022 to 2026	Every meeting
Teichmann J.	2	0-2	none	0-2	none	2019 to 2025	Every meeting
Bucsa C.	1	1-0	none	1-0	none	2022	Every meeting
Burillo Escorihuela I.	1	1-0	none	1-0	none	2025	Every meeting
Collins D.	1	1-0	none	1-0	none	2022	Every meeting
Goerges J.	1	1-0	none	1-0	none	2019	Every meeting
Kasatkina D.	1	1-0	1-0	none	none	2026	Every meeting
Makarova E.	1	1-0	none	1-0	none	2024	Every meeting
Mandlik E.	1	1-0	none	1-0	none	2023	Every meeting
Marcinko P.	1	1-0	1-0	none	none	2026	Every meeting
Oliynykova O.	1	1-0	none	1-0	none	2026	Every meeting
Sevastova A.	1	1-0	none	1-0	none	2025	Every meeting
Starodubtseva Y.	1	1-0	none	1-0	none	2026	Every meeting
Zidansek T.	1	1-0	none	1-0	none	2022	Every meeting
Anisimova A.	1	0-1	0-1	none	none	2026	Every meeting
Baptiste H.	1	0-1	none	0-1	none	2026	Every meeting
Blinkova A.	1	0-1	0-1	none	none	2024	Every meeting
Bogdan A.	1	0-1	none	0-1	none	2023	Every meeting
Bonaventure Y.	1	0-1	0-1	none	none	2023	Every meeting
Bouzkova M.	1	0-1	none	none	0-1	2023	Every meeting
Cocciaretto E.	1	0-1	none	0-1	none	2023	Every meeting
Danilovic O.	1	0-1	none	0-1	none	2022	Every meeting
Diyas Z.	1	0-1	none	0-1	none	2021	Every meeting
Kalinina A.	1	0-1	none	0-1	none	2026	Every meeting
Kalinskaya A.	1	0-1	0-1	none	none	2025	Every meeting
Kawa K.	1	0-1	none	0-1	none	2026	Every meeting
Osorio M.	1	0-1	none	none	0-1	2026	Every meeting
Ostapenko J.	1	0-1	none	0-1	none	2026	Every meeting
Paquet C.	1	0-1	none	0-1	none	2024	Every meeting
Pegula J.	1	0-1	0-1	none	none	2026	Every meeting
Siniakova K.	1	0-1	none	0-1	none	2026	Every meeting
Tauson C.	1	0-1	0-1	none	none	2026	Every meeting
Timofeeva M.	1	0-1	none	0-1	none	2024	Every meeting

A record, never a share: the most-met opponent is Tomljanovic A., 1-1 in 2 meetings. A percentage of meetings is a win probability wearing a hat, and this section prints none. Meetings are matches started; a walkover between the two is noted and counted in neither column.

06/Match log

37 rows, newest first, the score reads her games first

Opponent	Score	Date	Tournament	Surface	Round	Result	Her rank
Pegula J.No. 3 that day	3-6, 2-6	Aug 15, 2026	Western & Southern Financial Group Women's OpenWTA1000	hard	2nd round	L	87
Marcinko P.No. 72 that day	5-7, 6-4, 6-2	Aug 13, 2026	Western & Southern Financial Group Women's OpenWTA1000	hard	1st round	W	87
Sherif M.No. 73 that day	7-5, 4-6, 6-7	Jul 22, 2026	Hamburg European OpenWTA250	clay	1st round	L	91
Kawa K.No. 142 that day	1-6, 4-6	Jul 14, 2026	Iasi OpenWTA250	clay	1st round	L	81
Osorio M.No. 68 that day	2-6, 1-6	Jun 30, 2026	WimbledonGrand Slam	grass	1st round	L	90
Siniakova K.No. 36 that day	4-6, 6-7	May 26, 2026	French OpenGrand Slam	clay	1st round	L	91
Kalinina A.No. 84 that day	3-6, 4-6	May 18, 2026	Morocco OpenWTA250	clay	1st round	L	93
Baptiste H.No. 25 that day	7-6, 4-6, 4-6	May 8, 2026	Internazionali BNL d'ItaliaWTA1000	clay	2nd round	L	91
Starodubtseva Y.No. 57 that day	7-5, 4-6, 6-1	May 7, 2026	Internazionali BNL d'ItaliaWTA1000	clay	1st round	W	91
Ostapenko J.No. 40 that day	2-6, 5-7	Apr 24, 2026	Mutua Madrid OpenWTA1000	clay	2nd round	L	97
Oliynykova O.No. 70 that day	7-5, 6-0	Apr 22, 2026	Mutua Madrid OpenWTA1000	clay	1st round	W	97
Tomljanovic A.No. 81 that day	3-6, 4-6	Mar 17, 2026	Miami OpenWTA1000	hard	1st round	L	88
Tauson C.No. 16 that day	3-6, 1-6	Feb 3, 2026	Abu Dhabi WTA Women's Tennis OpenWTA500	hard	2nd round	L	94
Kasatkina D.No. 62 that day	7-6, 3-6, 6-4	Feb 2, 2026	Abu Dhabi WTA Women's Tennis OpenWTA500	hard	1st round	W	94
Anisimova A.No. 4 that day	3-6, 2-6	Jan 19, 2026	Australian OpenGrand Slam	hard	1st round	L	87
Teichmann J.No. 102 that day	7-5, 1-6, 5-7	Jul 18, 2025	Iasi OpenWTA250	clay	quarterfinal	L	127
Burillo Escorihuela I.No. 251 that day	6-4, 7-6	Jul 17, 2025	Iasi OpenWTA250	clay	2nd round	W	127
Sevastova A.No. 384 that day	6-3, 6-3	Jul 15, 2025	Iasi OpenWTA250	clay	1st round	W	127
Kalinskaya A.No. 18 that day	2-6, 6-7	Jan 29, 2025	Singapore OpenWTA250	hard	2nd round	L	179
Tomljanovic A.No. 114 that day	6-2, 6-3	Jan 27, 2025	Singapore OpenWTA250	hard	1st round	W	179
Paquet C.No. 106 that day	1-6, 5-7	Jul 23, 2024	Iasi OpenWTA250	clay	2nd round	L	249
Makarova E.No. 178 that day	6-2, 6-2	Jul 22, 2024	Iasi OpenWTA250	clay	1st round	W	249
Timofeeva M.No. 103 that day	5-7, 6-7	Jul 15, 2024	Budapest OpenWTA250	clay	1st round	L	248
Blinkova A.No. 51 that day	3-6, 0-6	Feb 5, 2024	Transylvania OpenWTA250	hard	1st round	L	175
Bogdan A.No. 39 that day	6-2, 3-6, 3-6	Jul 26, 2023	Ladies Open LausanneWTA250	clay	1st round	L	132
Bouzkova M.No. 33 that day	1-6, 4-6	Jul 3, 2023	WimbledonGrand Slam	grass	1st round	L	116
Cocciaretto E.No. 44 that day	2-6, 3-6	Jun 1, 2023	French OpenGrand Slam	clay	2nd round	L	128
Mandlik E.No. 119 that day	6-1, 4-6, 6-2	May 29, 2023	French OpenGrand Slam	clay	1st round	W	128
Bonaventure Y.No. 95 that day	6-4, 5-7, 1-6	Feb 20, 2023	Merida OpenWTA250	hard	1st round	L	124
Sherif M.No. 74 that day	3-6, 6-7	Sep 28, 2022	Parma Ladies OpenWTA250	clay	2nd round	L	120
Zidansek T.No. 92 that day	6-4, 6-4	Sep 27, 2022	Parma Ladies OpenWTA250	clay	1st round	W	120
Danilovic O.No. 124 that day	4-6, 6-4, 6-7	Jul 15, 2022	Ladies Open LausanneWTA250	clay	quarterfinal	L	154
Bucsa C.No. 126 that day	6-1, 5-7, 6-4	Jul 13, 2022	Ladies Open LausanneWTA250	clay	2nd round	W	154
Collins D.No. 7 that day	6-7, 6-3, 7-6	Jul 12, 2022	Ladies Open LausanneWTA250	clay	1st round	W	154
Diyas Z.No. 102 that day	4-6, 4-6	Jul 12, 2021	Ladies Open LausanneWTA250	clay	1st round	L	235
Teichmann J.No. 90 that day	3-6, 3-6	Jul 18, 2019	Ladies Open LausanneInternational	clay	2nd round	L	562
Goerges J.No. 25 that day	6-7, 6-4, 3-2	Jul 16, 2019	Ladies Open LausanneInternational	clay	1st round	Wret., opponent retired	562

Main-draw singles on the tour, 2019 to 2026, counted from the match rows. A match ended by retirement keeps the sets that were completed and is marked; a walkover is listed with no score and enters no count. Ranks are the tour’s ranking on the day of the match. No serve statistic appears on this page: the one archive that carries them is licensed for non-commercial use only. The WTA record runs through Aug 30, 2026.