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Sarah Korreck

Village Of Lakewood, IL
4.0C year-end 2025
117 matches · 71W–46L · 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.
3.62
estimated dynamic rating
Where the rating sits now, on 30 matches this season · USTA never publishes this number
7%
down to 3.5
93%
stay 4.0
0%
up to 4.5
Projected to December: 5% down · 95% stay · 0% up, from a year-end estimate of 3.63. Higher than today’s 3.62 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 lower half 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
IL · 4.0
131 of 211
By our estimated rating, not the published level.
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Sarah 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

Sarah has played at 3.5, 4.0 across 5 seasons — 1 move up and 0 down.

3.03.54.020192021202420252026

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, Sarah has gone from the 95th to the 50th percentile of players at that level, 2025 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 level9 levels played
0.0
25%
1W–3L · 55.4% of games
3.5
68.8%
11W–5L · 64.1% of games
4.0
63%
29W–17L · 56.1% of games
4.5
2W–1L
not enough matches yet
6.5
60%
6W–4L · 56.4% of games
7.5
72.7%
8W–3L · 62.5% of games
7.0mixed
80%
4W–1L · 65.3% of games
7.5mixed
71.4%
5W–2L · 60.5% of games
8.0mixed
44.4%
4W–5L · 53.5% of games

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

Match history117 matches
W
Rob Castanares / Sara Olsonmixed
2026-07-29 · #1 Doubles · 7.5 · with Mariusz Cislak
mixed — doesn't count toward your NTRP rating
6-3, 6-4
L
2026-07-15 · #2 Doubles · 4.0 · with Laurie Knutte
−0.038below expectation — took 38% of games against 55% expected
7-6, 3-0
W
Margaret McAndrews / Michele Kleeman
2026-07-07 · #2 Doubles · 7.5 · with MacKenzie Danson
expectation pending — we're still fetching an opponent's record
7-6, 4-2
L
2026-06-27 · #2 Doubles · 4.0 · with Renee Buxton
−0.047below expectation — took 8% of games against 38% expected
6-0, 6-1
W
Toni Mountcastle / Tracy Richards
2026-06-24 · #2 Doubles · 7.5 · with Patty Poorten
expectation pending — we're still fetching an opponent's record
6-3, 6-4
W
Mary Sullivan / Cynthia McCarthy
2026-06-23 · #2 Doubles · 4.0 · with Kym Cunningham
expectation pending — we're still fetching an opponent's record
6-2, 3-6, 1-0
W
N/A
2026-06-19 · #3 Doubles · 7.5 · with Sterling Decker
expectation pending — we're still fetching an opponent's record
6-0, 6-0
W
Anna Dau / Julie Steinberg
2026-06-18 · #3 Doubles · 4.0 · with Cindy Sullivan
expectation pending — we're still fetching an opponent's record
7-5, 6-5
L
Karen Materick / Molly McGinnis
2026-06-10 · #2 Doubles · 4.0 · with Terra Jahns
expectation pending — we're still fetching an opponent's record
3-6, 6-3, 1-0
W
Tiffany Oken / Cheryl Engle
2026-06-09 · #2 Doubles · 4.0 · with Ngozi Ezike
expectation pending — we're still fetching an opponent's record
6-4, 6-0
L
Karen Materick / Melissa Ko
2026-04-26 · #3 Doubles · 4.0 · with Jennifer Burnette
expectation pending — we're still fetching an opponent's record
7-6, 5-3
L
Ling Arenson / Julie Weidner
2026-04-25 · #3 Doubles · 4.0 · with Ali Gerstad
expectation pending — we're still fetching an opponent's record
6-4, 6-4
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