Jennifer Koo
OAK BROOK, IL
139 matches · 79W–60L · seasons 2019–2027
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Match history139 matches
W
expectation pending — we’re still fetching an opponent’s record
6-1, 6-1
L
expectation pending — we’re still fetching an opponent’s record
7-5, 3-6, 1-0
Where you rank locallyagainst everyone at your level
Teams43 teams · 2020–2027
CHI E 18W4.0 6.Tam Lund Sat 3 $25
NITA E 40W18d Oak Brook-Lukas
CDTA E 18&OW4.0 2Tam Lund Sat 3 $22
CDTA E M40&O8.0 4Nbrk Marberry Sat 3 $28
CDTA S M40&O8.0 1.Nbk Marberry Tue 7 $28 $28
CDTA W 18&OW4.0 4.Tam Lund Sat 3 $22
CDTA W M40&O8.0 4.Nrbk Marberry Sat 3 $28
NITA E 40W18c Oak Brook-Lukas
NITA E 40W40e Oak Brook-Lukas
NITA W 40W18f Oak Brook-Lukas
NITA W 40W40e Oak Brook-Lukas
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.