# Kimiko Date vs Katie Obrien — Head-to-Head

Source: https://tennis-db.com/wta/rivalries/kimiko-date-vs-katie-obrien?player1_id=balldontlie_wta:124247&player2_id=sackmann_wta:201396
Tour: WTA

Kimiko Date holds a 1–0 lead over Katie Obrien in their WTA head-to-head. Across 1 main-draw meeting, Kimiko Date leads 1–0 on grass. Most recently, Kimiko Date won the 2011 Wimbledon round of 128 6-0 7-5.

## Overall
- Kimiko Date: 1 wins
- Katie Obrien: 0 wins
- Total meetings: 1

## By surface
- Grass: Kimiko Date 1 - 0 Katie Obrien

## By tournament category
- Grand Slam: Kimiko Date 1 - 0 Katie Obrien

## Surface results by career season
Completed main-draw results by court surface. The canonical HTML page contains the complete comparison.

| Age | Player | Season | Surface | W-L | M | Win % |
| ---: | :--- | ---: | :--- | ---: | ---: | ---: |
| - | Kimiko Date | 1989 | Hard | 2-2 | 4 | 50.0% |
| - | Kimiko Date | 1989 | Clay | 1-1 | 2 | 50.0% |
| - | Kimiko Date | 1989 | Grass | 3-2 | 5 | 60.0% |
| - | Katie Obrien | 2004 | Grass | 0-1 | 1 | 0.0% |
| - | Kimiko Date | 1990 | Hard | 9-5 | 14 | 64.3% |
| - | Kimiko Date | 1990 | Grass | 1-1 | 2 | 50.0% |
| - | Kimiko Date | 1990 | Carpet | 0-1 | 1 | 0.0% |
| - | Katie Obrien | 2005 | Grass | 0-1 | 1 | 0.0% |
| - | Kimiko Date | 1991 | Hard | 9-8 | 17 | 52.9% |
| - | Kimiko Date | 1991 | Grass | 2-2 | 4 | 50.0% |
| - | Kimiko Date | 1991 | Carpet | 1-1 | 2 | 50.0% |
| - | Katie Obrien | 2006 | Grass | 0-3 | 3 | 0.0% |
| - | Kimiko Date | 1992 | Hard | 15-6 | 21 | 71.4% |
| - | Kimiko Date | 1992 | Clay | 4-3 | 7 | 57.1% |
| - | Kimiko Date | 1992 | Grass | 2-2 | 4 | 50.0% |
| - | Kimiko Date | 1992 | Carpet | 6-3 | 9 | 66.7% |
| - | Katie Obrien | 2007 | Hard | 2-1 | 3 | 66.7% |
| - | Katie Obrien | 2007 | Grass | 2-2 | 4 | 50.0% |
| - | Kimiko Date | 1993 | Hard | 18-6 | 24 | 75.0% |
| - | Kimiko Date | 1993 | Clay | 1-2 | 3 | 33.3% |
| - | Kimiko Date | 1993 | Grass | 2-1 | 3 | 66.7% |
| - | Kimiko Date | 1993 | Carpet | 4-2 | 6 | 66.7% |
| - | Katie Obrien | 2008 | Hard | 1-3 | 4 | 25.0% |
| - | Katie Obrien | 2008 | Clay | 0-2 | 2 | 0.0% |
| - | Katie Obrien | 2008 | Grass | 1-3 | 4 | 25.0% |
| - | Kimiko Date | 1994 | Hard | 26-5 | 31 | 83.9% |
| - | Kimiko Date | 1994 | Clay | 2-3 | 5 | 40.0% |
| - | Kimiko Date | 1994 | Grass | 2-2 | 4 | 50.0% |
| - | Kimiko Date | 1994 | Carpet | 2-2 | 4 | 50.0% |
| - | Katie Obrien | 2009 | Hard | 1-4 | 5 | 20.0% |
| - | Katie Obrien | 2009 | Clay | 0-3 | 3 | 0.0% |
| - | Katie Obrien | 2009 | Grass | 0-2 | 2 | 0.0% |
| - | Kimiko Date | 1995 | Hard | 16-6 | 22 | 72.7% |
| - | Kimiko Date | 1995 | Clay | 11-3 | 14 | 78.6% |
| - | Kimiko Date | 1995 | Grass | 6-2 | 8 | 75.0% |
| - | Kimiko Date | 1995 | Carpet | 6-1 | 7 | 85.7% |
| - | Katie Obrien | 2010 | Hard | 1-4 | 5 | 20.0% |
| - | Katie Obrien | 2010 | Clay | 1-2 | 3 | 33.3% |
| - | Katie Obrien | 2010 | Grass | 0-2 | 2 | 0.0% |
| - | Kimiko Date | 1996 | Hard | 25-8 | 33 | 75.8% |
| - | Kimiko Date | 1996 | Clay | 3-2 | 5 | 60.0% |
| - | Kimiko Date | 1996 | Grass | 5-2 | 7 | 71.4% |
| - | Kimiko Date | 1996 | Carpet | 1-2 | 3 | 33.3% |
| - | Katie Obrien | 2011 | Grass | 0-1 | 1 | 0.0% |
| - | Kimiko Date | 2008 | Hard | 0-1 | 1 | 0.0% |
| - | Kimiko Date | 2009 | Hard | 6-9 | 15 | 40.0% |
| - | Kimiko Date | 2009 | Clay | 0-1 | 1 | 0.0% |
| - | Kimiko Date | 2009 | Grass | 0-1 | 1 | 0.0% |
| Career | Kimiko Date | - | Hard | 170-127 | 297 | 57.23905723905724% |
| Career | Kimiko Date | - | Clay | 24-27 | 51 | 47.05882352941177% |
| Career | Kimiko Date | - | Grass | 31-24 | 55 | 56.36363636363637% |
| Career | Kimiko Date | - | Carpet | 20-12 | 32 | 62.5% |
| Career | Katie Obrien | - | Hard | 5-12 | 17 | 29.41176470588235% |
| Career | Katie Obrien | - | Clay | 1-7 | 8 | 12.5% |
| Career | Katie Obrien | - | Grass | 3-15 | 18 | 16.666666666666668% |

(+7 additional aligned rows on the canonical page)

## Performance progression by career season
Detailed serve and return statistics available for 149/164 of Kimiko Date's and 31/42 of Katie Obrien's main draw matches.

Sample is shown as matches with detailed serve and return statistics / total main draw matches. The canonical HTML page contains the complete comparison.

| Age | Player | Season | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% |
| ---: | :--- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| - | Kimiko Date | 2008 | 1/1 | 0.0 | 2.0 | 59.2% | 51.7% | 35.0% | 44.4% | 33.3% | 44.9% | 36.5% |
| - | Katie Obrien | 2005 | 1/1 | 0.0 | 4.0 | 51.2% | 63.6% | 47.6% | 0.0% | - | 55.8% | 20.0% |
| - | Kimiko Date | 2009 | 13/17 | 0.8 | 4.3 | 67.1% | 59.1% | 41.4% | 54.1% | 46.2% | 53.0% | 43.8% |
| - | Katie Obrien | 2006 | 2/3 | 1.5 | 6.0 | 58.1% | 57.7% | 42.1% | 37.9% | 62.5% | 51.1% | 42.8% |
| - | Kimiko Date | 2010 | 33/37 | 0.9 | 3.4 | 63.8% | 59.3% | 47.5% | 49.2% | 52.3% | 54.8% | 45.1% |
| - | Katie Obrien | 2007 | 4/7 | 2.3 | 5.3 | 55.7% | 62.5% | 36.7% | 44.9% | 36.4% | 51.4% | 42.2% |
| - | Kimiko Date | 2011 | 30/31 | 0.6 | 3.6 | 63.3% | 56.5% | 42.0% | 46.1% | 41.4% | 51.2% | 42.7% |
| - | Katie Obrien | 2008 | 6/10 | 1.5 | 6.7 | 54.5% | 62.6% | 43.3% | 54.5% | 42.0% | 53.7% | 42.6% |
| - | Kimiko Date | 2012 | 15/16 | 0.8 | 3.3 | 61.9% | 58.2% | 43.5% | 48.8% | 55.9% | 52.0% | 42.0% |
| - | Katie Obrien | 2009 | 9/10 | 1.2 | 6.6 | 59.0% | 54.7% | 35.8% | 45.2% | 44.2% | 46.9% | 39.4% |
| - | Kimiko Date | 2013 | 27/27 | 0.7 | 2.1 | 69.1% | 57.3% | 44.5% | 47.7% | 51.0% | 53.3% | 46.6% |
| - | Katie Obrien | 2010 | 8/10 | 1.6 | 6.3 | 59.5% | 54.8% | 39.7% | 41.7% | 33.7% | 49.0% | 37.8% |
| - | Kimiko Date | 2014 | 24/25 | 1.1 | 3.4 | 67.2% | 57.3% | 48.2% | 43.4% | 49.8% | 54.3% | 43.1% |
| - | Katie Obrien | 2011 | 1/1 | 2.0 | 5.0 | 62.9% | 46.2% | 30.4% | 41.7% | 60.0% | 40.3% | 37.5% |
| - | Kimiko Date | 2015 | 5/9 | 1.0 | 5.4 | 65.2% | 53.7% | 48.1% | 42.2% | 47.4% | 51.7% | 39.4% |
| - | Kimiko Date | 2017 | 1/1 | 0.0 | 3.0 | 51.5% | 23.5% | 18.8% | 0.0% | 0.0% | 21.2% | 19.4% |
| Career | Kimiko Date | - | 149/435 | 0.8 | 3.3 | 65.2% | 57.4% | 44.8% | 47.1% | 48.6% | 52.9% | 43.7% |
| Career | Katie Obrien | - | 31/43 | 1.5 | 6.2 | 57.6% | 57.5% | 39.0% | 44.0% | 40.3% | 49.7% | 39.5% |

## 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 |
| :--- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| Kimiko Date | 2091 | 154.4 | -1.51 | 0.62 | 0.928 | 48.3% | 30 | -185 | -61 | 55.2% | 0.45 | 77-65 (54%) | 42-48 (47%) | -2.8 |
| Katie Obrien | 1514 | 93.8 | -2.56 | -2.45 | 0.785 | 44.8% | 80 | 66 | 18 | 29.4% | -1.51 | 4-12 (25%) | 5-2 (71%) | 3.65 |

## Meeting history (last 20)
| Date | Tournament | Round | Surface | Winner | Score |
| :--- | :--- | :--- | :--- | :--- | :--- |
| 2011-06-22* | Wimbledon | R128 | Grass | Kimiko Date | 6-0 7-5 |

## Career rivalries
### Kimiko Date

| Opponent | W-L | M | Last played | H2H |
| :--- | ---: | ---: | :--- | :--- |
| Arantxa Sanchez-Vicario | 2-7 | 9 | 1996-08-25 | [H2H](https://tennis-db.com/wta/rivalries/kimiko-date-vs-arantxa-sanchez-vicario?player1_id=balldontlie_wta:124247&player2_id=balldontlie_wta:127535) |
| Conchita Martínez | 6-2 | 8 | 1996-08-24 | [H2H](https://tennis-db.com/wta/rivalries/kimiko-date-vs-conchita-martinez?player1_id=balldontlie_wta:124247&player2_id=balldontlie_wta:125846) |
| Naoko Sawamatsu | 5-3 | 8 | 1996-02-02 | [H2H](https://tennis-db.com/wta/rivalries/kimiko-date-vs-naoko-sawamatsu?player1_id=balldontlie_wta:124247&player2_id=sackmann_wta:200644) |
| Gabriela Sabatini | 3-4 | 7 | 1996-08-24 | [H2H](https://tennis-db.com/wta/rivalries/kimiko-date-vs-gabriela-sabatini?player1_id=balldontlie_wta:124247&player2_id=sackmann_wta:200572) |
| Steffi Graf | 0-7 | 7 | 1996-07-07 | [H2H](https://tennis-db.com/wta/rivalries/kimiko-date-vs-steffi-graf?player1_id=balldontlie_wta:124247&player2_id=sackmann_wta:200414) |

### Katie Obrien

| Opponent | W-L | M | Last played | H2H |
| :--- | ---: | ---: | :--- | :--- |
| Alla Kudryavtseva | 1-1 | 2 | 2009-09-17 | [H2H](https://tennis-db.com/wta/rivalries/alla-kudryavtseva-vs-katie-obrien?player1_id=balldontlie_wta:123864&player2_id=sackmann_wta:201396) |
| Monica Niculescu | 0-2 | 2 | 2009-07-16 | [H2H](https://tennis-db.com/wta/rivalries/monica-niculescu-vs-katie-obrien?player1_id=balldontlie_wta:99036&player2_id=sackmann_wta:201396) |
| Olga Govortsova | 0-2 | 2 | 2009-05-26 | [H2H](https://tennis-db.com/wta/rivalries/olga-govortsova-vs-katie-obrien?player1_id=balldontlie_wta:124228&player2_id=sackmann_wta:201396) |
| Kimiko Date | 0-1 | 1 | 2011-06-22 | [H2H](https://tennis-db.com/wta/rivalries/kimiko-date-vs-katie-obrien?player1_id=balldontlie_wta:124247&player2_id=sackmann_wta:201396) |
| Ekaterina Ivanova | 0-1 | 1 | 2010-09-23 | [H2H](https://tennis-db.com/wta/rivalries/katie-obrien-vs-ekaterina-ivanova?player1_id=sackmann_wta:201396&player2_id=sackmann_wta:201511) |

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Canonical URL: https://tennis-db.com/wta/rivalries/kimiko-date-vs-katie-obrien?player1_id=balldontlie_wta:124247&player2_id=sackmann_wta:201396
Data source: TennisDB (tennis-db.com)