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Karina Walters

DERWOOD, MD
4.5C year-end 2025
44 matches · 29W–15L · seasons 20212026
Bump probability
4.04.55.0lowhigh

Where this rating stands today. Taller means more likely. The dashed lines are the band edges, and the three shaded areas are the three percentages below.

4.29
estimated dynamic rating
Where the rating sits now, on 5 matches this season · USTA never publishes this number
0%
down to 4.0
100%
stay 4.5
0%
up to 5.0

A 4.5 runs from 4.01 to 4.50. This rating sits in the middle of the band, and every match moves it.

Our estimate, not a USTA figure — scale measured at this point of 2023 on 2160 players. Graded publicly in December when USTA publishes year-end ratings. It moves when you play, and occasionally when we improve the model.

Over timerating by season, and how you rank
Rating by season

Karina has been a steady 4.5 across all 4 seasons on record.

4.04.52021202220232026

The line is our estimate; the horizontal lines are level boundaries, so crossing one is a bump. Hollow points are years we inferred from the level played the following season, because USTA publishes a current rating but no history.

How you rank at your level
At 4.5, Karina has gone from the 6th to the 70th percentile of players at that level, 2023 to 2026.

Percentile compares the same level in the same season, by share of games won. Mixed is shown for context — USTA rules exclude it from your adult rating unless mixed is all you play.

By level3 levels played
4.5
50%
9W–9L · 48.1% of games
9.0
80%
12W–3L · 58.2% of games
9.0mixed
0W–1L
not enough matches yet

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

Match history44 matches
L
Lily Riedel / Jessica Coleman
2026-03-14 · #1 Doubles · 4.5 · with Jennifer McGraw
+0.004about as expected — took 55% of games against 51% expected
1-6, 7-5, 1-0
W
Dava Baumann / Christine Becer
2026-03-08 · #1 Doubles · 4.5 · with Jane Simoni
+0.050better than expected — took 75% of games against 49% expected
6-0, 6-4
L
Heather Carr / Dava Baumann
2026-02-10 · #2 Doubles · 4.5 · with Jane Simoni
0.041below expectation — took 29% of games against 51% expected
6-2, 6-3
W
Lily Riedel / Eve Helmer - (DQ)
2026-01-10 · #1 Doubles · 4.5 · with Jane Simoni
0.001about as expected — took 52% of games against 53% expected
7-5, 6-7
W
Jessica Coleman / Kathryn Rigney
2026-01-05 · #3 Doubles · 4.5 · with Jane Simoni
+0.030better than expected — took 67% of games against 51% expected
6-4, 6-2
W
2023-06-24 · #1 Doubles · with Jane Simoni
0.012about as expected — took 60% of games against 62% expected
6-4, 6-4
W
2023-06-23 · #2 Doubles · with Jane Simoni
+0.027better than expected — took 86% of games against 65% expected
6-0, 6-2
W
Kathleen Goyette / Pauli Martinchamps
2023-06-23 · #2 Doubles · with Jane Simoni
+0.022better than expected — took 80% of games against 63% expected
6-2, 6-1
L
2023-03-18 · #2 Doubles · 4.5 · with Keiko Lambuth
0.020below expectation — took 35% of games against 46% expected
7-5, 6-2
L
2023-02-25 · #1 Doubles · 4.5 · with Nancy Rutter
0.024below expectation — took 38% of games against 50% expected
6-2, 7-6
L
2023-02-17 · #1 Doubles · 4.5 · with Lolly Bates
0.019below expectation — took 29% of games against 42% expected
6-3, 6-2
L
2023-01-27 · #1 Doubles · 4.5 · with Jane Simoni
0.032below expectation — took 41% of games against 55% expected
6-7, 6-2, 1-0
What an account addsprivate to you

Signing in lets you point an account at your own record and keep things alongside it: notes on individual matches, your racquet and string setup, restring reminders, friendly matches that never reach TennisLink, and a diary of what you changed and what happened after.

None of it is visible to anyone else. Not to other players, not on your public page, not in search. Every private table is scoped to your account at the database level, so it is enforced rather than promised. The public page you are looking at is built from USTA match results and nothing else.

Not affiliated with or endorsed by the USTA. Rating shown is the published USTA year-end figure; match data is from USTA TennisLink.