# Ada Bakker vs Stephanie Defina — Head-to-Head

Source: https://tennis-db.com/wta/rivalries/ada-bakker-vs-stephanie-defina?player1_id=sackmann_wta:200151&player2_id=sackmann_wta:201090
Tour: WTA

Stephanie Defina holds a 1–0 lead over Ada Bakker in their WTA head-to-head. Across 1 main-draw meeting, Stephanie Defina leads 1–0 on clay. Most recently, Stephanie Defina won the 1970 St. Petersburg round of 16 7-5 6-3.

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
- Ada Bakker: 0 wins
- Stephanie Defina: 1 wins
- Total meetings: 1

## By surface
- Clay: Ada Bakker 0 - 1 Stephanie Defina

## By tournament category
- WTA 500: Ada Bakker 0 - 1 Stephanie Defina

## 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 | Schedule |
| :--- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| Ada Bakker | 1538 | 108.8 | - | - | - | - | -23 | 12 | -6 | 34.5% | -0.81 | 6-6 (50%) | 1-0 | 2.94 |
| Stephanie Defina | 1819 | 129.6 | - | - | - | - | -120 | 87 | -145 | 57.7% | 0.65 | 23-16 (59%) | 2-1 (67%) | -2.14 |

## Recent meetings (last 10)
| Date | Tournament | Category | Round | Surface | Winner | Score |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1970-04-10* | St. Petersburg | WTA 500 | R16 | Clay | Stephanie Defina | 7-5 6-3 |

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Canonical URL: https://tennis-db.com/wta/rivalries/ada-bakker-vs-stephanie-defina?player1_id=sackmann_wta:200151&player2_id=sackmann_wta:201090
Data source: TennisDB (tennis-db.com)