# Kayla Day vs Ena Koike — Head-to-Head

Source: https://tennis-db.com/wta/rivalries/kayla-day-vs-ena-koike?player1_id=balldontlie_wta:603112&player2_id=balldontlie_wta:649360
Tour: WTA

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
- Kayla Day: 0 wins
- Ena Koike: 0 wins
- Total meetings: 0

## 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 |
| :--- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| Kayla Day | 1637 | 116.7 | -0.99 | -1.63 | 0.851 | 46.9% | -10 | 30 | - | 31.5% | -1.26 | 3-11 (21%) | 3-8 (27%) | 90.7 | 2.93 |
| Ena Koike | 1500 | 99.8 | - | - | - | - | - | - | - | - | - | — | — | - | - |

## Recent meetings (last 10)
| Date | Tournament | Category | Round | Surface | Winner | Score |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 2026-10-17 | Japan Women's Open | WTA 250 | Q1 | Hard | Kayla Day | 7-5 6-3 |

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Canonical URL: https://tennis-db.com/wta/rivalries/kayla-day-vs-ena-koike?player1_id=balldontlie_wta:603112&player2_id=balldontlie_wta:649360
Data source: TennisDB (tennis-db.com)