# Antonia Ruzic vs Kayla Day — Head-to-Head

Source: https://tennis-db.com/wta/rivalries/antonia-ruzic-vs-kayla-day?player1_id=balldontlie_wta:133&player2_id=balldontlie_wta:603112
Tour: WTA

Antonia Ruzic holds a 1–0 lead over Kayla Day in their WTA head-to-head. Across 1 main-draw meeting, Antonia Ruzic leads 1–0 on hard courts. Most recently, Antonia Ruzic won the 2026 Japan Women's Open second round 6-4 0-0.

Category presentation: Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category.
Details: https://tennis-db.com/glossary#category-equivalence

Category presentation: Asterisked totals include editions mapped from documented historical predecessor categories.
Details: https://tennis-db.com/glossary#category-equivalence

## Overall
- Antonia Ruzic: 1 wins
- Kayla Day: 0 wins
- Total meetings: 1

## By surface
- Hard: Antonia Ruzic 1 - 0 Kayla Day

## By tournament category
- WTA 250: Antonia Ruzic 1 - 0 Kayla Day

## Advanced statistics comparison
Career aggregates from the precomputed Advanced table. Surface Elo values are relative to overall Elo; career Schedule is normalized per 100 matches and lower means tougher opposition.

| Player | Peak Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win% | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule |
| :--- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| Antonia Ruzic | 1801 | 130.4 | -2.62 | -0.59 | 0.886 | 47.3% | 1 | -91 | 1 | 42.3% | -0.53 | 13-6 (68%) | 2-6 (25%) | 107.0 | -1.77 |
| Kayla Day | 1638 | 117.4 | -0.91 | -1.83 | 0.857 | 47.1% | -10 | 30 | - | 32.6% | -1.19 | 3-11 (21%) | 3-8 (27%) | 90.7 | 3.0 |

## Recent meetings (last 10)
| Date | Tournament | Category | Round | Surface | Winner | Score |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 2026-10-22 | Japan Women's Open | WTA 250 | R16 | Hard | Antonia Ruzic | 6-4 0-0 |

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Canonical URL: https://tennis-db.com/wta/rivalries/antonia-ruzic-vs-kayla-day?player1_id=balldontlie_wta:133&player2_id=balldontlie_wta:603112
Data source: TennisDB (tennis-db.com)