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Jennifer Koo

OAK BROOK, IL
4.0C year-end 2025
i
Computer — generated by the USTA algorithm from match play
139 matches · 79W–60L · seasons 2019–2027

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Match history139 matches
W
2026-09-12 · NITA E 40W18d Oak Brook-Lukas · #1 Singles · 4.0
expectation pending — we’re still fetching an opponent’s record
6-3, 6-3
W
2026-07-21 · CDTA S M40&O8.0 1.Nbk Marberry Tue 7 $28 $28 · #2 Doubles · 8.0 · with Young Choi mixed
doesn’t count toward your NTRP rating
7-6, 5-3
W
2026-06-30 · CDTA S M40&O8.0 1.Nbk Marberry Tue 7 $28 $28 · #2 Doubles · 8.0 · with Young Choi mixed
doesn’t count toward your NTRP rating
7-5, 2-4, 1-0
W
2026-05-03 · CDTA W 18&OW4.0 4.Tam Lund Sat 3 $22 · #2 Doubles · 4.0 · with Laura Purcell
expectation pending — we’re still fetching an opponent’s record
6-1, 6-1
L
2026-04-26 · NITA W 40W18f Oak Brook-Lukas · #1 Singles · 4.0
expectation pending — we’re still fetching an opponent’s record
1-6, 4-6
W
2026-04-25 · NITA W 40W18f Oak Brook-Lukas · #1 Singles · 4.0
expectation pending — we’re still fetching an opponent’s record
7-5, 6-2
L
2026-04-19 · CDTA W M40&O8.0 4.Nrbk Marberry Sat 3 $28 · #2 Doubles · 8.0 · with Jason Hui mixed
doesn’t count toward your NTRP rating
4-6, 7-6, 0-1
L
2026-03-01 · NITA W 40W40e Oak Brook-Lukas · #3 Doubles · 4.0 · with Mary Ellen Young
expectation pending — we’re still fetching an opponent’s record
6-7, 7-6
W
2026-02-27 · NITA W 40W40e Oak Brook-Lukas · #1 Singles · 4.0
expectation pending — we’re still fetching an opponent’s record
6-2, 6-3
L
2026-01-31 · CDTA W 18&OW4.0 4.Tam Lund Sat 3 $22 · #3 Doubles · 4.0 · with Andrea Galligan Kuc
expectation pending — we’re still fetching an opponent’s record
7-5, 3-6, 1-0
W
2026-01-25 · NITA W 40W40e Oak Brook-Lukas · #1 Singles · 4.0
expectation pending — we’re still fetching an opponent’s record
6-4, 6-1
L
2025-12-20 · CDTA E M40&O8.0 4Nbrk Marberry Sat 3 $28 · #1 Doubles · 8.0 · with Joon Sung mixed
doesn’t count toward your NTRP rating
3-6, 6-4, 0-1
Where you rank locallyagainst everyone at your level
Teams43 teams · 2020–2027
Over timerating by season, and how you rank
By level7 levels played
3.5
100%
9W–0L · 70.3% of games
4.0
57.3%
51W–38L · 53.2% of games
7.5
2W–1L
not enough matches yet
6.0mixed
2W–1L
not enough matches yet
7.0mixed
66.7%
8W–4L · 53.9% of games
7.5mixed
1W–2L
not enough matches yet
8.0mixed
30%
6W–14L · 44.4% of games

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

By lineusually #2 Doubles, 32% of the time
#2 Doubles
32%
45 matches
#1 Doubles
28%
39 matches
#3 Doubles
24%
33 matches
#1 Singles
15%
21 matches
#2 Singles
1%
1 match

How often, across every team and every match we hold — including ones that do not count toward a rating. Advanced stats has a court-position table too, and it answers a different question: how well you do there, over matches that count. A team’s own page shows how that one team uses you.

Not affiliated with or endorsed by the USTA. Ratings labelled as published are USTA year-end figures; anything we describe as an estimate is ours, not USTA’s. Match data is from USTA TennisLink.

Tennis is mostly mental. You win or lose the match before you even go out there.
Venus Williams