Antonia Ruzic vs Kayla Day Prediction & Picks - Japan Women's Open

WTA - Japan Women's Open

Antonia Ruzic Croatia
Antonia Ruzic WTA 91
10/21/26 22:30
Kayla Day USA
Kayla Day WTA 119

Prediction:

 

Kayla Day win the match

−115
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 by Lou Aguila in Tennis Picks

Posted at -115 moneyline, Kayla Day looks to reach the quarterfinals against Antonia Ruzic, who just survived a three-set battle with Paula Badosa in the first round.

Current Form:

Antonia Ruzic edged Paula Badosa 3-6, 6-4, 6-3 in the first round at the 2026 Japan Open. Despite not playing a single match in Asia this year, Ruzic bounced back from a listless first set and outperformed the former world No.2 in the final two sets. Ruzic is 13-15 on hard courts in 2026.

Kayla Day entered the Japan Open main draw as a qualifier, and she made the most of her second chances. The American is through to the second round of this WTA 250 event by sweeping former Grand Slam champion Sofia Kenin, 6-3, 6-2. Day is 27-11 on hard courts this year.

The Matchup: Ruzic will play Day for the first time on the WTA Tour.

Up to $200 to bet on Antonia Ruzic - Kayla Day! 

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Antonia Ruzic vs Kayla Day Form

Antonia Ruzic and Kayla Day Latest Matches

Antonia Ruzic Latest matches
W L L L L W
Victories

2/6 (33%)

Defeats

4/6 (67%)

Oct 20, 2026 - Japan Women's Open

Paula Badosa
1 :  2
Antonia Ruzic

Aug 31, 2026 - WTA US Open

Ann Li
2 :  0
Antonia Ruzic

Aug 23, 2026 - WTA Monterrey Open

Antonia Ruzic
0 :  2
Nikola Bartunkova

Aug 13, 2026 - WTA Cincinnati Open

Antonia Ruzic
0 :  2
Magdalena Frech

Aug 4, 2026 - WTA National Bank Open

Antonia Ruzic
0 :  2
Madison Keys

Aug 2, 2026 - WTA National Bank Open

Lois Boisson
1 :  2
Antonia Ruzic
Kayla Day Latest matches
L W L W L W
Victories

3/6 (50%)

Defeats

3/6 (50%)

Oct 20, 2026 - Japan Women's Open

Kayla Day
2 :  0
Sofia Kenin

Oct 17, 2026 - Japan Women's Open

Maya Joint
2 :  1
Kayla Day

Oct 16, 2026 - Japan Women's Open

Ena Koike
0 :  2
Kayla Day

Sep 16, 2026 - WTA Guadalajara

Kayla Day
1 :  2
Liudmila Samsonova

Sep 14, 2026 - WTA Guadalajara

Elvina Kalieva
0 :  2
Kayla Day

Aug 24, 2026 - WTA US Open

Kayla Day
0 :  2
Julieta Pareja
Antonia Ruzic vs Kayla Day Picks

Antonia Ruzic - Kayla Day Key Points

  1. Antonia Ruzic is 13-15 on hard courts in 2026.
  2. Antonia Ruzic is 4-6 in second-round matches in 2026.
  3. Kayla Day is 27-11 on hard courts in 2026.
  4. Kayla Day is 7-7 in second-round matches in 2026.
Up to $200 to bet on Antonia Ruzic - Kayla Day! 

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Our Antonia Ruzic vs Kayla Day Prediction

The Difference Maker: Day is winning 67 percent of her first-serve points and has already created 27 break chances, converting 11.

What to Expect: Day gets a close win over Ruzic. Day will be a lot fresher than Ruzic, who survived a grueling three-setter against Badosa. Moreover, the American can absorb and redirect heavy groundstrokes, taking away time for Ruzic to execute her next shot. It’s going to be a close battle, but Day seems to have the tactical edge in this matchup.

Fearless Forecast: Kayla Day wins 6-4. 3-6, 7-5

Our betting prediction for Kayla Day vs. Antonia Ruzic: Kayla Day wins

Prediction:

 

Kayla Day win the match

−115
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All tips are fully researched and given in good faith, but profits cannot be guaranteed.