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Shumbriar Ostapko

Huntersville, NC
4.0C year-end 2025
152 matches · 66W–86L · 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.
3.55
estimated dynamic rating
Where the rating sits now, on 18 matches this season · USTA never publishes this number
25%
down to 3.5
75%
stay 4.0
0%
up to 4.5
Projected to December: 15% down · 85% stay · 0% up, from a year-end estimate of 3.58. Higher than today’s 3.55 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
Huntersville · 4.0
5 of 5
NC · 4.0
201 of 217
By our estimated rating, not the published level.
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Shumbriar 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

Shumbriar has been 4.0 for all 7 seasons on record, but moved a long way inside it — from the bottom of the band to the middle.

3.54.02019202120222023202420252026

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, Shumbriar has gone from the 20th to the 26th 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 level3 levels played
4.0
43.8%
39W–50L · 46.4% of games
7.5
45.8%
22W–26L · 46.8% of games
4.0mixed
33.3%
4W–8L · 41.5% of games

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

Match history152 matches
L
SHARON WELLS / Andy Forsythmixed
2026-08-03 · #2 Doubles · 4.0 · with Jeffrey Hornock
mixed — doesn't count toward your NTRP rating
6-4, 6-2
W
N/A
2026-07-27 · #1 Doubles · 4.0 · with Lori Fuller
expectation pending — we're still fetching an opponent's record
6-0, 6-0
L
Becky Heflin / Hien Jimmy Nguyenmixed
2026-07-16 · #2 Doubles · 4.0 · with James Doyle
mixed — doesn't count toward your NTRP rating
6-2, 6-4
L
Jennifer Higgins / Lauren Woodward
2026-06-29 · #1 Doubles · 4.0 · with Kathy Henry
expectation pending — we're still fetching an opponent's record
6-2, 6-0
W
Norm Marttila / Donna Upchurchmixed
2026-06-22 · #1 Doubles · 4.0 · with George Harris
mixed — doesn't count toward your NTRP rating
6-3, 5-7, 1-0
L
Tabitha Elledge / Tiffany Varela
2026-06-15 · #1 Doubles · 4.0 · with Martha Wells
expectation pending — we're still fetching an opponent's record
6-2, 3-6, 1-0
L
Scott Wiley / Leta Wileymixed
2026-06-08 · #2 Doubles · 4.0 · with Derek Heicken
mixed — doesn't count toward your NTRP rating
6-3, 6-1
L
Danielle Curwood / Brenda Clay
2026-05-21 · #1 Doubles · 4.0 · with Leta Wiley
expectation pending — we're still fetching an opponent's record
6-3, 6-0
W
Melissa Collins / Astrid Peterson
2026-04-30 · #1 Doubles · 4.0 · with Suzette Watson
expectation pending — we're still fetching an opponent's record
6-2, 6-2
W
Katherine Dugan / Kathryn Burdick
2026-04-27 · #2 Doubles · 4.0 · with Kelley Montroy
expectation pending — we're still fetching an opponent's record
6-4, 6-2
L
Stefanie Flippin / Liz Barton
2026-04-23 · #2 Doubles · 4.0 · with Patricia Baldelli
expectation pending — we're still fetching an opponent's record
6-4, 6-0
L
Denise Bost / Teresa Pal
2026-04-16 · #3 Doubles · 4.0 · with Odette Baker
expectation pending — we're still fetching an opponent's record
3-6, 6-2, 1-0
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.