WTA Billie Jean King Cup - World GroupHard16 Nov 2025 · 16:50
S. Waltert
#91 · Switzerland
VS
S. Sierra
#68 · Argentina

Odds

Market
Waltert
Sierra
Winner

Player analysis

S. Waltert comes into this match in difficult form — 2 wins from the last 5. Point statistics tell a concerning story — average DS of -1.3, meaning S. Waltert has been on the wrong side of most exchanges over five matches. The serve has been a concern — averaging only 5.5/10, leaving S. Waltert vulnerable on second serve and facing frequent return pressure.

DS -1.3Trend mixed

S. Sierra shows a 4–1 form record, though the level of opposition has been mixed — average ranking of opponents is 80. Point margins have been modest — DS averaging +7.9. Wins have been functional rather than dominant. The serve has been a concern — averaging only 5.7/10, leaving S. Sierra vulnerable on second serve and facing frequent return pressure. Good performance in key moments — break point efficiency of +13 over the last five.

DS 7.87Trend up

Recent form

Hard court stats

Waltert
Stat
Sierra
55.1%
Win rate
58.3%
86–70
W–L
49–35

Avg stats — last 5

1st serve %70%
1st serve won60%
2nd serve won50%
BP converted40%
BP saved50%
Aces1
Double faults3
1st serve %70%
1st serve won70%
2nd serve won40%
BP converted50%
BP saved60%
Aces1
Double faults4