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Sigrid Achtmann

Redmond, WA
3.5C year-end 2025
155 matches · 75W–80L · 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.

3.20
estimated dynamic rating
Where the rating sits now, on 3 matches this season · USTA never publishes this number
1%
down to 3.0
99%
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
Redmond · 3.5
35 of 43
WA · 3.5
860 of 1209

Sigrid 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

Sigrid has been 3.5 for all 7 seasons on record, but moved a long way inside it — from the bottom of the band to the top.

3.03.52019202020212022202320242025

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 3.5, Sigrid has gone from the 86th to the 37th 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 level7 levels played
3.5
66.7%
32W–16L · 58.7% of games
4.0
26.7%
4W–11L · 43.4% of games
7.0
66.7%
16W–8L · 60% of games
8.0
40%
6W–9L · 46.6% of games
6.0mixed
0W–3L
not enough matches yet
7.0mixed
50%
10W–10L · 51.6% of games
8.0mixed
25%
3W–9L · 37.8% of games

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

Match history155 matches
W
2025-11-02 · #2 Doubles · 7.0 · with Chantal Tran
+0.003about as expected — took 62% of games against 59% expected
6-1, 6-7, 1-0
W
Amy Enns-Ford / Julie Naus
2025-09-27 · #1 Doubles · 7.0 · with Vivian Nagai
+0.025better than expected — took 71% of games against 56% expected
6-3, 6-2
L
2025-09-14 · #2 Doubles · 7.0 · with Janice Ferrera
+0.027better than expected — took 53% of games against 40% expected
6-4, 2-6, 1-0
L
2025-08-09 · #2 Doubles · 8.0 · with Michael Merz
+0.000better than expected — took 43% of games against 35% expected
6-2, 5-7, 1-0
W
James Milton Smith / Tina Zakahimixed
2025-08-01 · #3 Doubles · 7.0 · with Mihai Petriuc
+0.000better than expected — took 59% of games against 40% expected
7-6, 6-3
L
2025-07-18 · #3 Doubles · 8.0 · with Yue Zhao
+0.000about as expected — took 25% of games against 23% expected
6-0, 6-4
L
2025-07-13 · #3 Doubles · 7.0 · with Yue Zhao
+0.000below expectation — took 42% of games against 48% expected
6-2, 4-6, 1-0
L
2025-07-06 · #3 Doubles · 8.0 · with Hristo Stoynov
+0.000better than expected — took 50% of games against 43% expected
4-6, 7-6, 1-0
L
2025-07-04 · #1 Doubles · 7.0 · with Mihai Petriuc
+0.000about as expected — took 43% of games against 41% expected
6-2, 5-7, 1-0
L
2025-06-28 · #2 Doubles · 8.0 · with Hristo Stoynov
+0.000below expectation — took 14% of games against 44% expected
6-1, 6-1
L
Alana Llacuna / Melissa Ling
2025-05-31 · #1 Doubles · 4.0 · with Shreya Singh
0.014below expectation — took 33% of games against 42% expected
6-3, 6-3
L
2025-04-06 · #2 Doubles · 3.5 · with Pam Butterfield
0.017below expectation — took 33% of games against 44% expected
6-4, 6-2
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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.