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Kerri Porritt

Boise, ID
4.5C year-end 2025
192 matches · 126W–66L · seasons 20192026
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.

3.93
estimated dynamic rating
Where the rating sits now, on 19 matches this season · USTA never publishes this number
81%
down to 4.0
19%
stay 4.5
0%
up to 5.0
Projected to December: 55% down · 45% stay · 0% up, from a year-end estimate of 3.99. Higher than today’s 3.93 because players this far below their band have historically finished nearer the middle of it.

A 4.5 runs from 4.01 to 4.50. This rating sits in the bottom 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
Boise · 4.5
12 of 12
ID · 4.5
28 of 28

Kerri 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

Kerri has played at 4.5, 4.0 across 8 seasons — 1 move up and 1 down.

3.54.04.520192020202120222023202420252026

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, Kerri has gone from the 41st to the 40th percentile of players at that level, 2019 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 level8 levels played
4.0
100%
17W–0L · 72.5% of games
4.5
58.3%
28W–20L · 54.9% of games
8.0
1W–1L
not enough matches yet
9.0
2W–1L
not enough matches yet
7.5mixed
3W–0L
not enough matches yet
8.0mixed
65%
26W–14L · 54.3% of games
8.5mixed
46.2%
6W–7L · 47.6% of games
9.0mixed
47.4%
9W–10L · 47.5% of games

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

Match history192 matches
W
Lisa Hilde / Dawna Buckinghammixedchamps
2026-08-01 · #2 Doubles · with Zel Mertz
mixed — doesn't count toward your NTRP rating
4-6, 6-4, 1-0
L
Adriana Kurtz / Debbie Merrittmixedchamps
2026-07-31 · #2 Doubles · with Anna Orrison
mixed — doesn't count toward your NTRP rating
6-0, 6-4
W
Debbie Akers / Kelly Wathnemixedchamps
2026-07-31 · #1 Doubles · with Anna Orrison
mixed — doesn't count toward your NTRP rating
4-6, 6-4, 1-0
W
Mary Katayama / Ashley Davis
2026-06-23 · #2 Doubles · 4.5 · with Natalie Little
expectation pending — we're still fetching an opponent's record
6-4, 6-2
W
N/A
2026-06-17 · #3 Doubles · 9.0 · with Dana Rosellini
expectation pending — we're still fetching an opponent's record
6-0, 6-0
W
Kelli Fredback / Jennifer Mitchell
2026-06-09 · #3 Doubles · 8.0 · with Marnie Newton
expectation pending — we're still fetching an opponent's record
6-3, 7-6
L
Sandra Cashen / Kristen Jacobs
2026-06-08 · #3 Doubles · 9.0 · with Ashley Davis
expectation pending — we're still fetching an opponent's record
6-4, 6-3
L
Suzanne Baran / Judy Murdock
2026-06-04 · #2 Doubles · 8.0 · with Anna Orrison
expectation pending — we're still fetching an opponent's record
6-7, 6-3, 1-0
W
Kathy Scribner / Sandra Cashen
2026-06-03 · #3 Doubles · 9.0 · with Mila Wood
expectation pending — we're still fetching an opponent's record
6-4, 6-4
L
Joelle Staley / Tessa Staley
2026-06-02 · #3 Doubles · 4.5 · with Jami Garver
expectation pending — we're still fetching an opponent's record
6-0, 6-0
L
Joelle Staley / Matt Rezendesmixed
2026-05-09 · #2 Doubles · 9.0 · with Dylan Raymond
mixed — doesn't count toward your NTRP rating
6-2, 2-6, 1-0
L
2026-05-06 · #1 Doubles · 4.5 · with Mila Wood
0.034below expectation — took 37% of games against 53% expected
6-3, 6-4
What an account addsprivate to you

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