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Michael Tammen

Portland, OR
4.5A year-end 2024
44 matches · 27W–17L · 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.

4.23
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.

Where you rank
Portland · 4.5
23 of 119
OR · 4.5
39 of 226

Michael 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

Michael has played at 5.0, 4.5 across 7 seasons — 0 moves up and 1 down.

4.04.55.02019202020212022202320242026

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 — 2020, 2024 — 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

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
4.5
77.8%
7W–2L · 63.8% of games
5.0
68.8%
11W–5L · 58.9% of games
9.0
2W–0L
not enough matches yet
9.0mixed
50%
6W–6L · 54% of games

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

Match history44 matches
L
2026-06-27 · #2 Doubles · 9.0 · with Rebecca Martinez Griffin
+0.000about as expected — took 45% of games against 47% expected
4-6, 6-3, 1-0
W
Augusto Carneiro / Michael Ollinger
2026-03-15 · #1 Doubles · 4.5 · with Bo Johnson
+0.035better than expected — took 80% of games against 59% expected
6-1, 6-2
L
2026-02-22 · #1 Doubles · 4.5 · with Josh Schweitz
0.062below expectation — took 33% of games against 61% expected
6-2, 6-4
W
2026-01-10 · #1 Doubles · 4.5 · with Josh Schweitz
+0.002better than expected — took 75% of games against 67% expected
6-1, 6-3
W
Bryan Laing / Hector M Salomon
2026-01-05 · #2 Doubles · 4.5 · with Josh Schweitz
+0.003better than expected — took 67% of games against 62% expected
6-4, 6-2
L
2024-08-24 · #2 Doubles · with Scott Erickson
0.026below expectation — took 48% of games against 58% expected
4-6, 7-5, 1-0
L
2024-08-23 · #1 Doubles · with Marcus Eyth
0.020below expectation — took 37% of games against 47% expected
6-3, 6-4
L
Ryan Goldsmith / Peter Dusicka
2024-05-19 · #2 Doubles · 5.0 · with Scott Erickson
0.039below expectation — took 32% of games against 51% expected
7-5, 6-1
W
Ryan Goldsmith / Marc Ollivier
2024-04-20 · #1 Doubles · 5.0 · with Benjamin Valenti
+0.049better than expected — took 75% of games against 49% expected
6-2, 6-2
W
Makoto Yoshino / Roshan Fernando
2023-06-11 · #2 Doubles · 5.0 · with Nicholas Walrod
+0.031better than expected — took 59% of games against 45% expected
6-4, 7-5
L
2023-05-28 · #2 Doubles · 5.0 · with Josh Schweitz
+0.036better than expected — took 47% of games against 34% expected
6-2, 2-6, 1-0
L
2023-03-26 · #2 Doubles · 9.0 · with Deborah Naugler
+0.000about as expected — took 39% of games against 38% expected
6-1, 4-6, 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.