← Search

Kathy Sonderby

Add to scout listFree account. Monday email when they play.
Mill Valley, CA
3.5C year-end 2025
i
Computer — generated by the USTA algorithm from match play
73 matches · 31W–42L · seasons 2019–2026
Match history73 matches
L
2026-09-27 · SCOTT VALLEY CW7.5A · #1 Doubles · 7.5 · with Ann Robinson
doesn’t count toward your NTRP rating
2-6, 1-6
W
2026-09-24 · SCOTT VALLEY CW6.5A · #2 Doubles · 6.5 · with Elizabeth Lang
doesn’t count toward your NTRP rating
5-7, 6-2, 1-0
L
2026-09-15 · SCOTT VALLEY CW6.5A · #1 Doubles · 6.5 · with Melissa Cohen
doesn’t count toward your NTRP rating
4-6, 5-7
W
2026-09-14 · SCOTT VALLEY CW7.5A-DT · #3 Doubles · 7.5 · with Laura Spence
doesn’t count toward your NTRP rating
6-4, 6-7, 1-0
W
Default
2026-09-08 · SCOTT VALLEY CW7.5A-DT · #3 Doubles · 7.5 · with Laura Spence
doesn’t count toward your NTRP rating
6-0, 6-0
L
2026-08-28 · SCOTT VALLEY CW7.5A · #3 Doubles · 7.5 · with Ann Robinson
doesn’t count toward your NTRP rating
4-6, 6-4, 0-1
L
2026-06-25 · SCOTT VALLEY 40MX7.0A · #1 Doubles · 7.0 · with Mark Downing mixed
doesn’t count toward your NTRP rating
4-6, 7-5, 0-1
L
2025-04-27 · SCOTT VALLEY 18AW4.0A · #2 Doubles · 4.0 · with Ann Robinson
loading the estimate
0-6, 5-7
L
2025-04-24 · SCOTT VALLEY 55AW8.0A · #3 Doubles · 8.0 · with Lorna Rushforth
loading the estimate
4-6, 2-6
L
2025-04-20 · SCOTT VALLEY 18AW4.5A · #3 Doubles · 4.5 · with Dee Ann Ezcurra
loading the estimate
0-6, 2-6
L
2025-04-19 · SCOTT VALLEY 55AW8.0A · #2 Doubles · 8.0 · with Dee Ann Ezcurra
loading the estimate
0-6, 3-6
L
2025-04-18 · SCOTT VALLEY 18AW4.0A-DT · #2 Doubles · 4.0 · with Ashley MacDonald
loading the estimate
3-6, 3-6
Where you rank locallyagainst everyone at your level
Teams28 teams · 2019–2026
Over timerating by season, and how you rank
By level9 levels played
3.5
100%
9W–0L · 68.2% of games
4.0
46.7%
14W–16L · 45.1% of games
4.5
0W–1L
not enough matches yet
6.5
1W–1L
not enough matches yet
7.5
37.5%
6W–10L · 47.7% of games
8.0
0%
0W–4L · 23.8% of games
8.5
0%
0W–4L · 21% of games
7.0mixed
0W–1L
not enough matches yet
8.0mixed
16.7%
1W–5L · 31.4% of games

Games won matters more than matches won — NTRP adjusts on margins.

By lineusually #3 Doubles, 38% of the time
#3 Doubles
38%
28 matches
#2 Doubles
32%
23 matches
#1 Doubles
16%
12 matches
#1 Singles
8%
6 matches
#2 Singles
6%
4 matches

How often, across every team and every match we hold — including ones that do not count toward a rating. Advanced stats has a court-position table too, and it answers a different question: how well you do there, over matches that count. A team’s own page shows how that one team uses you.

Not affiliated with or endorsed by the USTA. Ratings labelled as published are USTA year-end figures; anything we describe as an estimate is ours, not USTA’s. Match data is from USTA TennisLink.

Losing is not my enemy. Fear of losing is my enemy.
Rafael Nadal