Player Data JSON

{
  "player": {
    "id": 2683,
    "api_id": 489680,
    "name": "Klara Vaja",
    "short_name": "K. Vaja",
    "country": "Serbia",
    "country_code": "RS",
    "gender": "Female",
    "circuit": "WTA",
    "date_of_birth": "2006-01-15",
    "height_cm": null,
    "weight_kg": null,
    "plays": "",
    "turned_pro": null
  },
  "utr": {
    "id": 4140507,
    "singles": 9.0,
    "doubles": null,
    "ranking": 1350,
    "division": "Pro",
    "is_pro": false,
    "updated_at": "2026-01-18"
  },
  "current_ranking": null,
  "ranking_history": [],
  "career_stats": {
    "total_matches": 5,
    "wins": 0,
    "losses": 5,
    "win_rate": 0.0
  },
  "surface_stats": {
    "hard": {
      "matches": 0,
      "wins": 0,
      "losses": 0,
      "win_rate": 0
    },
    "clay": {
      "matches": 5,
      "wins": 0,
      "losses": 5,
      "win_rate": 0.0
    },
    "grass": {
      "matches": 0,
      "wins": 0,
      "losses": 0,
      "win_rate": 0
    }
  },
  "category_stats": {
    "UTR": {
      "matches": 5,
      "wins": 0,
      "losses": 5,
      "win_rate": 0.0
    }
  },
  "average_match_stats": {
    "matches_with_stats": 5,
    "avg_aces_per_match": 0.6,
    "avg_double_faults_per_match": 4.8,
    "avg_first_serve_pct": 63.5,
    "avg_first_serve_won_pct": 44.2,
    "avg_second_serve_won_pct": 30.0,
    "avg_break_points_converted_pct": null
  },
  "recent_form": [
    {
      "date": "2026-01-24",
      "opponent": "Stela Dzimovic",
      "opponent_id": 801445,
      "tournament": "UTR Belgrade W01",
      "surface": "clay",
      "round": "Semifinals",
      "result": "L",
      "score": "0-2",
      "stats": {
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        "double_faults": 8,
        "first_serve_pct": 72.85714285714285,
        "first_serve_won_pct": 50.98039215686274,
        "second_serve_won_pct": 26.31578947368421,
        "break_points_converted_pct": null,
        "total_points_won": null
      }
    },
    {
      "date": "2026-01-23",
      "opponent": "Julia Terziyska",
      "opponent_id": 57973,
      "tournament": "UTR Belgrade W01",
      "surface": "clay",
      "round": "",
      "result": "L",
      "score": "0-2",
      "stats": {
        "aces": 0,
        "double_faults": 3,
        "first_serve_pct": 68.42105263157895,
        "first_serve_won_pct": 26.923076923076923,
        "second_serve_won_pct": 16.666666666666664,
        "break_points_converted_pct": null,
        "total_points_won": null
      }
    },
    {
      "date": "2026-01-22",
      "opponent": "Victoria Borodulina",
      "opponent_id": 250861,
      "tournament": "UTR Belgrade W01",
      "surface": "clay",
      "round": "",
      "result": "L",
      "score": "0-2",
      "stats": {
        "aces": 2,
        "double_faults": 4,
        "first_serve_pct": 58.333333333333336,
        "first_serve_won_pct": 46.42857142857143,
        "second_serve_won_pct": 25.0,
        "break_points_converted_pct": null,
        "total_points_won": null
      }
    },
    {
      "date": "2026-01-20",
      "opponent": "Natalia Pietras-Surmacz",
      "opponent_id": 254733,
      "tournament": "UTR Belgrade W01",
      "surface": "clay",
      "round": "",
      "result": "L",
      "score": "0-2",
      "stats": {
        "aces": 0,
        "double_faults": 4,
        "first_serve_pct": 66.10169491525424,
        "first_serve_won_pct": 48.717948717948715,
        "second_serve_won_pct": 30.0,
        "break_points_converted_pct": null,
        "total_points_won": null
      }
    },
    {
      "date": "2026-01-19",
      "opponent": "Anja Stankovic",
      "opponent_id": 389496,
      "tournament": "UTR Belgrade W01",
      "surface": "clay",
      "round": "",
      "result": "L",
      "score": "0-2",
      "stats": {
        "aces": 0,
        "double_faults": 5,
        "first_serve_pct": 51.92307692307693,
        "first_serve_won_pct": 48.148148148148145,
        "second_serve_won_pct": 45.45454545454545,
        "break_points_converted_pct": null,
        "total_points_won": null
      }
    }
  ],
  "form_summary": {
    "last_10_matches": 5,
    "wins": 0,
    "losses": 5,
    "form_string": "LLLLL"
  },
  "head_to_head": [
    {
      "opponent": "Anja Stankovic",
      "opponent_id": 389496,
      "matches": 1,
      "wins": 0,
      "losses": 1
    },
    {
      "opponent": "Julia Terziyska",
      "opponent_id": 57973,
      "matches": 1,
      "wins": 0,
      "losses": 1
    },
    {
      "opponent": "Natalia Pietras-Surmacz",
      "opponent_id": 254733,
      "matches": 1,
      "wins": 0,
      "losses": 1
    },
    {
      "opponent": "Victoria Borodulina",
      "opponent_id": 250861,
      "matches": 1,
      "wins": 0,
      "losses": 1
    },
    {
      "opponent": "Stela Dzimovic",
      "opponent_id": 801445,
      "matches": 1,
      "wins": 0,
      "losses": 1
    }
  ],
  "upcoming_matches": [],
  "year_statistics": null,
  "data_generated_at": "2026-01-30 21:08:18 UTC"
}