Player Data JSON

{
  "player": {
    "id": 4223,
    "api_id": 464360,
    "name": "Oleg Kolninov",
    "short_name": "O. Kolninov",
    "country": "",
    "country_code": "",
    "gender": "Male",
    "circuit": "ATP",
    "date_of_birth": null,
    "height_cm": null,
    "weight_kg": null,
    "plays": "",
    "turned_pro": null
  },
  "utr": {
    "id": 5706291,
    "singles": 12.0,
    "doubles": null,
    "ranking": 3992,
    "division": "General",
    "is_pro": false,
    "updated_at": "2026-01-18"
  },
  "current_ranking": null,
  "ranking_history": [],
  "career_stats": {
    "total_matches": 5,
    "wins": 1,
    "losses": 4,
    "win_rate": 20.0
  },
  "surface_stats": {
    "hard": {
      "matches": 5,
      "wins": 1,
      "losses": 4,
      "win_rate": 20.0
    },
    "clay": {
      "matches": 0,
      "wins": 0,
      "losses": 0,
      "win_rate": 0
    },
    "grass": {
      "matches": 0,
      "wins": 0,
      "losses": 0,
      "win_rate": 0
    }
  },
  "category_stats": {
    "UTR": {
      "matches": 5,
      "wins": 1,
      "losses": 4,
      "win_rate": 20.0
    }
  },
  "average_match_stats": {
    "matches_with_stats": 5,
    "avg_aces_per_match": 5.0,
    "avg_double_faults_per_match": 2.4,
    "avg_first_serve_pct": 58.8,
    "avg_first_serve_won_pct": 58.5,
    "avg_second_serve_won_pct": 44.4,
    "avg_break_points_converted_pct": null
  },
  "recent_form": [
    {
      "date": "2026-01-17",
      "opponent": "Ammar Elamin",
      "opponent_id": 294162,
      "tournament": "UTR Yokohama M02",
      "surface": "hard",
      "round": "Semifinals",
      "result": "L",
      "score": "0-2",
      "stats": {
        "aces": 0,
        "double_faults": 1,
        "first_serve_pct": 66.66666666666666,
        "first_serve_won_pct": 52.63157894736842,
        "second_serve_won_pct": 68.42105263157895,
        "break_points_converted_pct": null,
        "total_points_won": null
      }
    },
    {
      "date": "2026-01-15",
      "opponent": "Noritaka Koizumi",
      "opponent_id": 491950,
      "tournament": "UTR Yokohama M02",
      "surface": "hard",
      "round": "",
      "result": "L",
      "score": "1-2",
      "stats": {
        "aces": 7,
        "double_faults": 3,
        "first_serve_pct": 68.0,
        "first_serve_won_pct": 64.70588235294117,
        "second_serve_won_pct": 51.162790697674424,
        "break_points_converted_pct": null,
        "total_points_won": null
      }
    },
    {
      "date": "2026-01-14",
      "opponent": "Ryota Tanuma",
      "opponent_id": 134638,
      "tournament": "UTR Yokohama M02",
      "surface": "hard",
      "round": "",
      "result": "W",
      "score": "1-0",
      "stats": {
        "aces": 3,
        "double_faults": 1,
        "first_serve_pct": 52.77777777777778,
        "first_serve_won_pct": 63.1578947368421,
        "second_serve_won_pct": 50.0,
        "break_points_converted_pct": null,
        "total_points_won": null
      }
    },
    {
      "date": "2026-01-13",
      "opponent": "Taiyo Uenoyama",
      "opponent_id": 491801,
      "tournament": "UTR Yokohama M02",
      "surface": "hard",
      "round": "",
      "result": "L",
      "score": "1-2",
      "stats": {
        "aces": 11,
        "double_faults": 7,
        "first_serve_pct": 55.3030303030303,
        "first_serve_won_pct": 64.38356164383562,
        "second_serve_won_pct": 49.09090909090909,
        "break_points_converted_pct": null,
        "total_points_won": null
      }
    },
    {
      "date": "2026-01-12",
      "opponent": "Yuta Tomida",
      "opponent_id": 415589,
      "tournament": "UTR Yokohama M02",
      "surface": "hard",
      "round": "",
      "result": "L",
      "score": "0-2",
      "stats": {
        "aces": 4,
        "double_faults": 0,
        "first_serve_pct": 51.21951219512195,
        "first_serve_won_pct": 47.61904761904761,
        "second_serve_won_pct": 65.21739130434783,
        "break_points_converted_pct": null,
        "total_points_won": null
      }
    }
  ],
  "form_summary": {
    "last_10_matches": 5,
    "wins": 1,
    "losses": 4,
    "form_string": "LLWLL"
  },
  "head_to_head": [
    {
      "opponent": "Ammar Elamin",
      "opponent_id": 294162,
      "matches": 1,
      "wins": 0,
      "losses": 1
    },
    {
      "opponent": "Ryota Tanuma",
      "opponent_id": 134638,
      "matches": 1,
      "wins": 1,
      "losses": 0
    },
    {
      "opponent": "Taiyo Uenoyama",
      "opponent_id": 491801,
      "matches": 1,
      "wins": 0,
      "losses": 1
    },
    {
      "opponent": "Noritaka Koizumi",
      "opponent_id": 491950,
      "matches": 1,
      "wins": 0,
      "losses": 1
    },
    {
      "opponent": "Yuta Tomida",
      "opponent_id": 415589,
      "matches": 1,
      "wins": 0,
      "losses": 1
    }
  ],
  "upcoming_matches": [],
  "year_statistics": null,
  "data_generated_at": "2026-01-30 11:26:51 UTC"
}