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Katie Zera

BURIEN, WA
3.5C year-end 2025
81 matches · 42W–39L · seasons 20192026
Bump probability
3.03.54.0lowhigh

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.

3.29
estimated dynamic rating
Where the rating sits now, on 4 matches this season · USTA never publishes this number
0%
down to 3.0
100%
stay 3.5
0%
up to 4.0

A 3.5 runs from 3.01 to 3.50. 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.

Where you rank
WA · 3.5
600 of 1209

Katie is ranked among players at the same level in the same place, by our estimated dynamic rating — not the published level, which is the same for everyone in the band. Groups smaller than five are not ranked, because a placing out of two is noise dressed as standing.

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

Katie has played at 3.5, 4.0 across 8 seasons — 1 move up and 1 down.

3.03.54.020192020202120222023202420252026

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. The smaller, faded points — 2026 — rest on fewer than 5 matches, where the estimate is mostly the level the player was entered at rather than anything they did on court. Read the shape, not the value.

How you rank at your level
At 3.5, Katie has gone from the 88th to the 27th percentile of players at that level, 2019 to 2025.

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 level4 levels played
3.5
58.7%
27W–19L · 53% of games
4.0
16.7%
2W–10L · 41.2% of games
7.0mixed
80%
4W–1L · 59.1% of games
8.0mixed
56.2%
9W–7L · 55.7% of games

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

Match history81 matches
W
2026-03-07 · #1 Doubles · 3.5 · with Stacia Servos
+0.066better than expected — took 65% of games against 37% expected
7-5, 6-2
L
2026-02-01 · #1 Doubles · 3.5 · with Vivian Nagai
0.030below expectation — took 20% of games against 39% expected
6-3, 6-0
W
2026-01-25 · #1 Doubles · 3.5 · with My Nguyen
+0.013about as expected — took 48% of games against 44% expected
7-5, 2-6, 1-0
L
2026-01-10 · #2 Doubles · 3.5 · with Stacia Servos
0.004about as expected — took 38% of games against 42% expected
7-5, 6-3
W
2025-07-20 · #3 Doubles · 8.0 · with Andrew Marshall
+0.000better than expected — took 72% of games against 38% expected
6-0, 7-5
W
Sean Kelly / Heidi Martinmixed
2025-07-06 · #2 Doubles · 8.0 · with Chan Han
+0.000better than expected — took 60% of games against 43% expected
6-1, 5-7, 1-0
L
2025-04-19 · #2 Singles · 3.5
0.042below expectation — took 14% of games against 40% expected
6-1, 6-1
L
2025-04-12 · #1 Doubles · 3.5 · with Catherine Shaheen
0.037below expectation — took 33% of games against 52% expected
6-3, 6-3
L
2025-03-30 · #1 Doubles · 3.5 · with Trucmai Tran
0.021below expectation — took 29% of games against 42% expected
6-2, 6-3
W
2025-03-15 · #2 Doubles · 3.5 · with Geraldine Carlos
0.010below expectation — took 50% of games against 55% expected
3-6, 6-4, 1-0
L
2025-03-08 · #1 Doubles · 3.5 · with Anne Salvino
+0.043better than expected — took 50% of games against 33% expected
7-6, 5-7, 1-0
W
2025-03-02 · #3 Doubles · 3.5 · with Trucmai Tran
+0.064better than expected — took 100% of games against 61% expected
6-0, 6-0
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.