Dayeon Back vs Yingqun Sun — W15 Singapore Semi-final

W15 Singapore · CHALLENGER · Semi-final
KOR
Dayeon Back
#291WTA
24 yrs
Last 10
LWWWLWWWLW
0 — 0
Sets
Monday, 20 April 2026
hard
CHN
Yingqun Sun
#847WTA
20 yrs
Last 10
LWWWLLWLWL

Umpiry Score

Pre-match
Back D.
5.0
Heavy underdogUmpiry ScorePartial · surface data limited
  • Extended break: 35 days (−0.7)
Sun Y.
5.7
Slight disadvantageUmpiry ScorePartial · surface data limited
Form & Matchup
5.0No prior meetings
H2H
5.0
5.3
Surface form
3.4
0.0
Win streak
0.0
Fatigue & Travel
3-set count
4.0
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.

Back D.
662
Sun Y.
22–

Head to head

No previous meetings on record.

Statistics

Recent form
Back D.Sun Y.
68%1st serve in+7%61%
59%1st serve points won+3%62%
45%2nd serve points won+3%42%
54%Service points won54%
50%Return points won+6%44%
50%Break points saved+2%52%
0.7Aces / match+1.92.6
2.7Double faults / match+1.34

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

Draw

Final
Ivanov V.
Wong H.
6-46-2
Matsuda R.
Back D.
7-646-2
Semi-finals
Wong H.
Sema E.
6-26-3
Ivanov V.
Zhang J.
6-36-3
Back D.
Sun Y.
6-26-2
Matsuda R.
Ivanov V.
6-16-4
Quarter-finals
Sema E.
Kim Y.
6-26-4
Zhang J.
Matsuda R.
7-654-66-4
Ivanov V.
Das A.
6-36-2
Wong H.
Weckerle M.
3-67-56-2
Ivanov V.
Tsao C.
6-17-64
Matsuda R.
Choi S.
6-707-56-2
Back D.
Kim Y.
6-26-2
Sun Y.
Sema E.
6-36-1
R16
Matsuda R.
Wan E.
2-66-06-3
Kim Y.
Ohashi R.
6-06-1
Ivanov V.
Hou Y.
2-0
Das A.
Ozeki M.
6-16-3
Zhang J.
Lin F.
6-16-3
Weckerle M.
Varaksina A.
6-16-3
Wong H.
Tsao C.
6-36-3
Sema E.
Ivanov E.
7-56-4
Sema E.
Hou Y.
6-16-2
Sun Y.
Lee H.
4-66-26-2
Back D.
Delaunay C.
6-26-3
Kim Y.
Liu Y.
6-44-66-3
Ivanov V.
Krywoj M.
6-06-0
Choi S.
Das A.
5-76-26-3
Matsuda R.
Desvignes E.
6-46-2
Tsao C.
Weckerle M.
6-06-747-5
R32
Kim Y.
Jang S.
6-36-3
Wong H.
Lee H.
6-37-63
Das A.
Chua S.
6-07-60
Weckerle M.
Wu H.
6-06-2
Hou Y.
Hosoki Y.
6-796-06-3
Ivanov E.
Ng K.
6-06-3
Wan E.
Kantam T.
6-06-1
Ozeki M.
Desvignes E.
6-16-3
Varaksina A.
Kozak V.
6-23-0
Tsao C.
Ahn Y.
6-47-62
Ohashi R.
Smith A.
6-30-0
Zhang J.
Delaunay C.
6-17-61
Ivanov V.
Sun Y.
7-52-66-4
Sema E.
Nguyen K.
3-67-56-3
Matsuda R.
Liu Y.
6-26-2
Lin F.
Giam H.
6-06-0
Kim Y.
Ohashi R.
6-07-61
Lee H.
Ahn Y.
6-26-3
Das A.
Zhang J.
6-46-4
Sun Y.
Wu H.
4-66-16-0
Choi S.
Nguyen K.
6-46-747-5
Tsao C.
Chua S.
6-26-4
Weckerle M.
Giam H.
6-06-0
Liu Y.
Lin F.
6-24-66-3
Desvignes E.
Jang S.
6-46-4
Delaunay C.
Varaksina A.
6-21-66-2
Sema E.
Shin J.
6-36-726-1
Matsuda R.
Hoo C.
6-21-66-0
Back D.
Kim C.
4-66-36-2
Krywoj M.
Ng K.
6-36-1
Ivanov V.
De Bresser F.
6-37-5
Hou Y.
Kantam T.
6-16-4