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Mary Katayama

Boise, ID
4.0C year-end 2025
115 matches · 81W–34L · seasons 20222026
Bump probability
3.54.04.5lowhigh

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.

3.90
estimated dynamic rating
Where the rating sits now, on 23 matches this season · USTA never publishes this number
0%
down to 3.5
89%
stay 4.0
11%
up to 4.5
Projected to December: 0% down · 97% stay · 3% up, from a year-end estimate of 3.84. Lower than today’s 3.90 because form regresses — players this far into their band partway through a season have historically finished nearer the middle of it. Keep playing at this level and the numbers above are the ones that hold.

A 4.0 runs from 3.51 to 4.00. This rating sits in the top 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 · 4.0
9 of 59
ID · 4.0
23 of 123

Mary 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

Mary has been a steady 4.0 across all 3 seasons on record.

3.54.0202420252026

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 4.0, Mary has gone from the 98th to the 76th percentile of players at that level, 2024 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 level7 levels played
3.5
100%
8W–0L · 82.8% of games
4.0
81.8%
18W–4L · 64.3% of games
4.5
28.6%
4W–10L · 41.9% of games
6.0mixed
71.4%
5W–2L · 58.9% of games
6.5mixed
69.2%
9W–4L · 65.3% of games
7.0mixed
90.9%
10W–1L · 67% of games
8.0mixed
66.7%
6W–3L · 53.5% of games

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

Match history115 matches
W
Adrienne Idsalmixedchamps
2026-07-18 · #2 Singles
mixed — doesn't count toward your NTRP rating
7-6, 6-2
L
Addison Westwoodmixedchamps
2026-07-18 · #1 Singles
mixed — doesn't count toward your NTRP rating
1-6, 6-3, 1-0
L
2026-07-18 · #3 Doubles · with Julianne Arnell
mixed — doesn't count toward your NTRP rating
5-7, 6-0, 1-0
W
Kallie Portermixedchamps
2026-07-17 · #1 Singles
mixed — doesn't count toward your NTRP rating
6-0, 6-2
W
Kaly Gillettemixedchamps
2026-07-17 · #1 Singles
mixed — doesn't count toward your NTRP rating
6-0, 6-0
L
2026-06-30 · #1 Singles · 4.5
0.026below expectation — took 14% of games against 35% expected
6-1, 6-1
W
Stella Emerson
2026-06-29 · #1 Singles · 4.0
expectation pending — we're still fetching an opponent's record
6-2, 7-6
W
Jessika Hulewsky
2026-06-24 · #2 Singles · 4.0
expectation pending — we're still fetching an opponent's record
6-4, 6-1
L
Lauren Drew
2026-06-23 · #1 Singles · 4.5
expectation pending — we're still fetching an opponent's record
6-3, 6-2
L
Kerri Porritt / Natalie Little
2026-06-23 · #2 Doubles · 4.5 · with Ashley Davis
expectation pending — we're still fetching an opponent's record
6-4, 6-2
W
Khloe Kyllonen
2026-06-22 · #1 Singles · 4.0
expectation pending — we're still fetching an opponent's record
7-6, 6-3
W
MIRIAM MUNTEAN
2026-06-15 · #1 Singles · 4.0
expectation pending — we're still fetching an opponent's record
6-0, 7-6
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.