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Sandy Kowallis

Boise, ID
4.0C year-end 2025
126 matches · 76W–50L · seasons 2019–2026
Bump probability
3.54.04.5lowhigh
Where this rating stands today. Taller means more likely.
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The dashed lines are the edges of your band. The three shaded areas are exactly the three percentages below — area here is the chance of one outcome for you, not a count of players.
3.57
estimated dynamic rating
Where the rating sits now, on 9 matches this season · USTA never publishes this number
18%
down to 3.5
82%
stay 4.0
0%
up to 4.5
Projected to December: 11% down · 89% stay · 0% up, from a year-end estimate of 3.60. Higher than today’s 3.57 because players this far below their band have historically finished nearer the middle of it.

A 4.0 runs from 3.51 to 4.00. This rating sits in the bottom of the band, and every match moves it.

Our estimate, not a USTA figure.
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scale measured at this point of 2023 on 2160 players. It moves when you play, and occasionally when we improve the model. USTA publishes year-end ratings in December, which is when this gets graded against what actually happened.
Where you rank
Boise · 4.0
75 of 87
ID · 4.0
187 of 216
By our estimated rating, not the published level.
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Sandy is ranked against players at the same level in the same place. The published level is identical for everyone in a band, so it cannot separate them — our estimate can. Groups smaller than five are not ranked at all, because a placing out of two is noise dressed as standing.
Over timerating by season, and how you rank
Rating by season

Sandy has been 4.0 for all 8 seasons on record, but moved a long way inside it — from the bottom of the band to the middle.

3.54.020192020202120222023202420252026

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.

How you rank at your level
At 8.0, Sandy has gone from the 94th to the 90th percentile of players at that level, 2021 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 level3 levels played
4.0
65.3%
32W–17L · 57% of games
4.5
2W–0L
not enough matches yet
8.0
66%
33W–17L · 57% of games

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

Match history126 matches
L
2026-08-01 · #2 Doubles · with Nancy Baskin
−0.042below expectation — took 14% of games against 40% expected
6-1, 6-1
W
2026-07-31 · #2 Doubles · with Anne Marie Carlisle
expectation pending — we're still fetching an opponent's record
1-6, 6-4, 1-0
L
2026-06-30 · #3 Doubles · 8.0 · with Maryann Moorhead
−0.022below expectation — took 42% of games against 52% expected
7-5, 7-5
W
2026-06-18 · #2 Doubles · 8.0 · with Anne Marie Carlisle
expectation pending — we're still fetching an opponent's record
6-0, 6-3
W
Cathy Adams / Barbara Beagles
2026-06-11 · #3 Doubles · 8.0 · with Dawna Buckingham
expectation pending — we're still fetching an opponent's record
6-4, 6-1
W
2026-06-04 · #1 Doubles · 8.0 · with Anne Marie Carlisle
expectation pending — we're still fetching an opponent's record
6-2, 6-2
L
2026-05-07 · #1 Doubles · 4.0 · with Linda Western
expectation pending — we're still fetching an opponent's record
6-7, 6-0, 1-0
L
Jennifer McEntee / Monica Gabby
2026-04-30 · #2 Doubles · 4.0 · with Adriana Kurtz
expectation pending — we're still fetching an opponent's record
6-3, 5-7, 1-0
W
2026-04-23 · #3 Doubles · 4.0 · with Nancy Baskin
−0.013about as expected — took 72% of games against 70% expected
6-0, 7-5
L
Janice Smith / Kathy Miller-Reeschamps
2025-10-11 · #3 Doubles · with Sharon Mitchener
expectation pending — we're still fetching an opponent's record
6-4, 4-6, 1-0
W
2025-10-11 · #3 Doubles · with Lori Ewing
+0.002about as expected — took 56% of games against 55% expected
7-5, 7-6
W
Inge Bentz / Nancy Hallowellchamps
2025-10-10 · #3 Doubles · with Sharon Mitchener
expectation pending — we're still fetching an opponent's record
4-6, 7-5, 1-0
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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.