Mattias Siimar (born 3 February 1998) is an Estonian tennis player.[1]
Siimar has a career high ATP singles ranking of 1036, achieved on 25 October 2021.
Playing for Estonia in Davis Cup, Siimar has a win–loss record of 5–6. His twin brother Kristofer Siimar is also a tennis player.
ITF World Tennis Tour and Challenger finals
edit
| Legend (singles)
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| ATP Challenger Tour (0–0)
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| ITF World Tennis Tour (0–1)
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| Titles by surface
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| Hard (0–0)
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| Clay (0–1)
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| Grass (0–0)
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| Carpet (0–0)
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| Result
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W–L
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Date
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Tournament
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Tier
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Surface
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Opponent
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Score
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| Loss
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0–1
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Aug 2021
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M15 Pärnu, Estonia
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World Tennis Tour
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Clay
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 Ergi Kırkın
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7–5, 3–6, 3–6
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Participations: (5–6)
edit
| Group membership
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| World Group (0–0)
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| WG play-off (0–0)
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| Group I (0–0)
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| Group II (2–6)
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| Group III (3–0)
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| Group IV (0–0)
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| Matches by surface
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| Hard (4–6)
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| Clay (1–0)
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| Grass (0–0)
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| Carpet (0–0)
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| Matches by type
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| Singles (0–3)
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| Doubles (5–3)
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| Rubber outcome
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No.
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Rubber
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Match type (partner if any)
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Opponent nation
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Opponent player(s)
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Score
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 3–0; 17 July 2015; City of San Marino, San Marino; Europe Zone Group III round robin; clay surface
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| Victory
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1
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III
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Doubles (with Kenneth Raisma) (dead rubber)
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 Montenegro
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Rrezart Cungu / Ivan Saveljić
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6–1, 6–2
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| 3–0; 3 March 2016; Tere Tennis Centre, Tallinn, Europe Zone Group III round robin; hard (indoor) surface
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| Victory
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2
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III
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Doubles (with Jürgen Zopp) (dead rubber)
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 Kosovo
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Granit Bajraliu / Gurash Hasani
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6–1, 6–1
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| 3–0; 4 March 2016; Tere Tennis Centre, Tallinn, Estonia; Europe Zone Group III round robin; hard (indoor) surface
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| Victory
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3
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III
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Doubles (with Jürgen Zopp) (dead rubber)
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 Greece
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Christos Antonopoulos / Vasileios Iliopoulos
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6–0, 6–1
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 1–4; 3-5 February 2017; Irene Country Club, Centurion, South Africa; Europe/Africa Zone Group II first round; hard surface
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| Defeat
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4
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III
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Doubles (with Kenneth Raisma)
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 South Africa
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Raven Klaasen / Ruan Roelofse
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7–6(7–4), 3–6, 4–6, 5–7
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| Defeat
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5
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IV
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Singles (dead rubber)
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Lloyd Harris
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5–7, 3–6
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| 3–2; 7-9 April 2017; Tere Tennis Centre, Tallinn, Estonia; Europe/Africa Zone Group II relegation play-off; hard (indoor) surface
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| Victory
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6
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III
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Doubles (with Kenneth Raisma)
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 Monaco
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Romain Arneodo / Benjamin Balleret
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4–6, 6–1, 6–2, 7–6(9–7)
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| Defeat
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7
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IV
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Singles (dead rubber)
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Lucas Catarina
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4–6, 6–4, 6–7(3–7)
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| 1–3; 3-4 February 2018; Šiauliai Tennis School, Šiauliai, Lithuania; Europe/Africa Zone Group II first round; hard (indoor) surface
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| Defeat
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8
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III
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Doubles (with Kenneth Raisma)
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 Lithuania
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Ričardas Berankis / Laurynas Grigelis
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6–2, 4–6, 6–7(4–7)
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| 2–1; 6-7 March 2020; Alex Metreveli Tennis Club, Tbilisi, Georgia; World Group II playoff first round; hard surface
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| Victory
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9
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III
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Doubles (with Vladimir Ivanov)
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 Georgia
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Aleksandre Metreveli / George Tsivadze
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3–6, 6–3, 6–3
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| 0–2; 17-18 September 2021; Jan Group Arena, Biel, Switzerland; World Group II first round; hard (indoor) surface
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| Defeat
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10
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II
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Singles
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 Switzerland
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Henri Laaksonen
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4–6, 0–6
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| Defeat
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11
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III
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Doubles (with Vladimir Ivanov)
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Marc-Andrea Hüsler / Dominic Stricker
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4–6, 6–7(4–7)
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Estonia
