Janice Tjen vs Yeon Woo Ku — W35 Osaka Quarter-final

W35 Osaka · CHALLENGER · Quarter-final
INA
Janice Tjen
#40WTA
1751ELO
1731Hard ELO
$489kYTD
$843kCAREER
24 yrs · Right-handed
Last 10
LLWLWLLLLL
0 — 0
Sets
Monday, 7 April 2025
hard
KOR
Yeon Woo Ku
#207WTA
1362ELO
1341Hard ELO
23 yrs
Last 10
LLLLWWLLLL

Umpiry Score

Pre-match
Tjen J.
7.1
Strong advantageUmpiry Score
  • Extended break: 42 days (−0.7)
Ku Y.
3.8
Heavy underdogUmpiry Score
  • Recent retirement (−1.5)
Form & Matchup
9.9+390 Hard Elo edge
Surface ELO
0.1Hard Elo 1341
10.0Overall Elo 1751
ELO gap
0.0Overall Elo 1362
5.0
H2H
5.0
8.5
Surface form
7.6
0.0
Win streak
7.04-match win streak
Context
5.0
Defending pts
5.0

The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.

Tjen J.
662
Ku Y.
12–

Head to head

1–0
DateTournamentRoundSurfaceWinnerScore
2025-06-23W35 TaipeiR16hardJanice Tjen3-6 6-1 7-6(0)

Statistics

Recent form
Tjen J.Ku Y.
60%1st serve in+4%64%
66%1st serve points won+6%60%
47%2nd serve points won+1%48%
59%Service points won+3%56%
40%Return points won+8%48%
55%Break points saved+4%51%
3.2Aces / match+2.21
3.3Double faults / match+0.42.9

Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.

Draw

Final
Ma Y.
Liang E.
6-44-66-4
Semi-finals
Liang E.
Kuramochi M.
7-56-4
Ma Y.
Tjen J.
6-16-1
Quarter-finals
Ma Y.
Shimizu E.
3-66-47-5
Tjen J.
Ku Y.
6-16-2
Kuramochi M.
Guo H.
6-40-67-69
Liang E.
Kaji H.
6-16-2
R16
Shimizu E.
Imamura S.
6-36-2
Liang E.
Yao X.
6-36-4
Ma Y.
Shimizu A.
6-26-4
Guo H.
Wang M.
6-26-1
Tjen J.
Ishii S.
6-06-3
Kaji H.
Zhu L.
3-66-26-4
Ku Y.
Sakatsume H.
7-636-2
Kuramochi M.
Cabrera L.
3-66-47-5
R32
Shimizu A.
Hartono A.
6-47-64
Tjen J.
Akita S.
6-27-5
Shimizu E.
Jang S.
6-26-4
Ishii S.
Saigo R.
6-07-5
Yao X.
Zheng W.
6-25-76-4
Imamura S.
Sato H.
6-26-2
Wang M.
Kawamura M.
7-57-5
Ku Y.
Yamaguchi K.
6-46-3
Ma Y.
Koshiishi A.
3-66-46-1
Guo H.
Okamura K.
4-66-36-3
Liang E.
Kinoshita H.
6-46-2
Sakatsume H.
Kawaguchi N.
6-26-2
Kaji H.
Hosogi S.
6-16-2
Zhu L.
Matsuda R.
6-27-5
Kuramochi M.
Sema E.
5-76-36-2
Cabrera L.
Arakawa H.
6-46-3