"독일 오픈 (테니스)"의 두 판 사이의 차이

편집 요약 없음
}}
'''벳엣홈 오픈 독일 테니스 선수권 대회'''(<small>공식 명칭</small> Bet-at-home Open German Tennis Championship)는 매년 독일 [[함부르크]]에서 열리는 남자 프로 [[테니스]] 대회이다. 제1회 대회는 1892년 개최되었다. [[프로 테니스 협회|ATP 투어]] 대회 분류 중 [[ATP 월드 투어 500 시리즈]]에 속하며, 코트 종류는 [[클레이 코트]]이다. 매년 5월 말에 열리는 클레이 코트 [[그랜드 슬램 (테니스)|그랜드 슬램]] 대회인 [[프랑스 오픈]]의 전초전 성격의 대회로서 5월에 주로 열려왔으며, 최근에는 7월에 개최되었다. '''독일 오픈'''이나 '''함부르크 오픈'''이라고도 불린다.
 
 
=== 단신 결승===
{| class="wikitable sortable" style="font-size: 85%; text-align:center" color:white width=70%
|-style="color:white;background-color:#1878C3;" text-align:center"
|-
|연도
|우승
!준우승
|스코어
|-
| [[2013 International German Open|2013]] || {{Flagicon|ITA}} '''[[Fabio Fognini]] || {{Flagicon|ARG}} [[Federico Delbonis]] || 4–6, 7–6<sup>(10–8)</sup>, 6–2
|-
| [[2012 International German Open|2012]] || {{Flagicon|ARG}} '''[[Juan Mónaco]] || {{Flagicon|GER}} [[Tommy Haas]] || 7–5, 6–4
|-
| [[2011 International German Open|2011]] || {{Flagicon|FRA}} '''[[Gilles Simon]] || {{Flagicon|ESP}} [[Nicolás Almagro]] || 6–4, 4–6, 6–4
|-
| [[2010 International German Open|2010]] || {{Flagicon|KAZ}} '''[[Andrey Golubev]] || {{Flagicon|AUT}} [[Jürgen Melzer]] || 6–3, 7–5
|-
| [[2009 International German Open|2009]] || {{Flagicon|RUS}} '''[[Nikolay Davydenko]] || {{Flagicon|FRA}} [[Paul-Henri Mathieu]] || 6–4, 6–2
|-
|colspan=5 align=center|↑&nbsp;&nbsp;[[ATP World Tour 500 series|ATP World Tour 500]]&nbsp;&nbsp;↑
|-
| [[2008 Hamburg Masters|2008]] || {{Flagicon|ESP}} '''[[Rafael Nadal]] || {{Flagicon|SUI}} [[Roger Federer]] || 7–5, 6–7<sup>(3–7)</sup>, 6–3
|-
| [[2007 Hamburg Masters|2007]] || {{Flagicon|SUI}} '''[[Roger Federer]] || {{Flagicon|ESP}} [[Rafael Nadal]] || 2–6, 6–2, 6–0
|-
| [[2006 Hamburg Masters|2006]] || {{Flagicon|ESP}} '''[[Tommy Robredo]] || {{Flagicon|CZE}} [[Radek Štěpánek]] || 6–1, 6–3, 6–3
|-
| [[2005 Hamburg Masters|2005]] || {{Flagicon|SUI}} '''[[Roger Federer]] || {{Flagicon|FRA}} [[Richard Gasquet]] || 6–3, 7–5, 7–6<sup>(7–4)</sup>
|-
| [[2004 Hamburg Masters|2004]] || {{Flagicon|SUI}} '''[[Roger Federer]] || {{Flagicon|ARG}} [[Guillermo Coria]] || 4–6, 6–4, 6–2, 6–3
|-
| [[2003 Hamburg Masters|2003]] || {{Flagicon|ARG}} '''[[Guillermo Coria]] || {{Flagicon|ARG}} [[Agustín Calleri]] || 6–3, 6–4, 6–4
|-
| [[2002 Hamburg Masters|2002]] || {{Flagicon|SUI}} '''[[Roger Federer]] || {{Flagicon|RUS}} [[Marat Safin]] || 6–1, 6–3, 6–4
|-
| [[2001 Hamburg Masters|2001]] || {{Flagicon|ESP}} '''[[Albert Portas]] || {{Flagicon|ESP}} [[Juan Carlos Ferrero]] || 4–6, 6–2, 0–6, 7–6, 7–5
|-
| [[2000 Hamburg Masters|2000]] || {{Flagicon|BRA}} '''[[Gustavo Kuerten]] || {{Flagicon|RUS}} [[Marat Safin]] || 6–4, 5–7, 6–4, 5–7, 7–6
|-
|colspan=5 align=center|↑&nbsp;&nbsp;[[ATP Masters Series]]&nbsp;&nbsp;↑
|-
| [[1999 ATP German Open|1999]] || {{Flagicon|CHI}} '''[[Marcelo Ríos]] || {{Flagicon|ARG}} [[Mariano Zabaleta]] || 6–7, 7–5, 5–7, 7–6, 6–2
|-
| [[1998 ATP German Open|1998]] || {{Flagicon|ESP}} '''[[Albert Costa]] || {{Flagicon|ESP}} [[Àlex Corretja]] || 6–2, 6–0, 1–0 (retired)
|-
| [[1997 ATP German Open|1997]] || {{Flagicon|UKR}} '''[[Andrei Medvedev]] || {{Flagicon|ESP}} [[Félix Mantilla Botella|Félix Mantilla]] || 6–0, 6–4, 6–2
|-
| [[1996 ATP German Open|1996]] || {{Flagicon|ESP}} '''[[Roberto Carretero]] || {{Flagicon|ESP}} [[Àlex Corretja]] || 2–6, 6–4, 6–4, 6–4
|-
| [[1995 ATP German Open|1995]] || {{Flagicon|UKR}} '''[[Andrei Medvedev]] || {{Flagicon|CRO}} [[Goran Ivanišević]] || 6–3, 6–2, 6–1
|-
| [[1994 ATP German Open|1994]] || {{Flagicon|UKR}} '''[[Andrei Medvedev]] || {{Flagicon|RUS}} [[Yevgeny Kafelnikov]] || 6–4, 6–4, 3–6, 6–3
|-
| [[1993 ATP German Open|1993]] || {{Flagicon|GER}} '''[[Michael Stich]] || {{Flagicon|RUS}} [[Andrei Chesnokov]] || 6–3, 6–7, 7–6, 6–4
|-
| [[1992 ATP German Open|1992]] || {{Flagicon|SWE}} '''[[Stefan Edberg]] || {{Flagicon|GER}} [[Michael Stich]] || 5–7, 6–4, 6–1
|-
| [[1991 ATP German Open|1991]] || {{Flagicon|TCH}} '''[[Karel Nováček]] || {{Flagicon|SWE}} [[Magnus Gustafsson]] || 6–3, 6–3, 5–7, 0–6, 6–1
|-
| [[1990 ATP German Open|1990]] || {{Flagicon|ESP}} '''[[Juan Aguilera]] || {{Flagicon|GER}} [[Boris Becker]] || 6–1, 6–0, 7–6
|-
|colspan=5 align=center|↑&nbsp;&nbsp;[[ATP Super 9]]&nbsp;&nbsp;↑
|-
| 1989 || {{Flagicon|TCH}} '''[[Ivan Lendl]] || {{Flagicon|AUT}} [[Horst Skoff]] || 6–4, 6–1, 6–3
|-
| 1988 || {{Flagicon|SWE}} '''[[Kent Carlsson]] || {{Flagicon|FRA}} [[Henri Leconte]] || 6–2, 6–1, 6–4
|-
| 1987 || {{Flagicon|TCH}} '''[[Ivan Lendl]] || {{Flagicon|TCH}} [[Miloslav Mečíř]] || 6–1, 6–3, 6–3
|-
| 1986 || {{Flagicon|FRA}} '''[[Henri Leconte]] || {{Flagicon|TCH}} [[Miloslav Mečíř]] || 6–2, 5–7, 6–4, 6–2
|-
| 1985 || {{Flagicon|TCH}} '''[[Miloslav Mečíř]] || {{Flagicon|SWE}} [[Henrik Sundström]] || 6–4, 6–1, 6–4
|-
| 1984 || {{Flagicon|ESP}} '''[[Juan Aguilera]] || {{Flagicon|SWE}} [[Henrik Sundström]] || 6–4, 2–6, 2–6, 6–4, 6–4
|-
| 1983 || {{Flagicon|FRA}} '''[[Yannick Noah]] || {{Flagicon|ESP}} [[José Higueras]] || 3–6, 7–5, 6–2, 6–0
|-
| 1982 || {{Flagicon|Spain}} '''[[José Higueras]] || {{Flagicon|AUS}} [[Peter McNamara]] || 4–6, 6–7, 7–6, 6–3, 7–6
|-
| 1981 || {{Flagicon|AUS}} '''[[Peter McNamara]] || {{Flagicon|USA}} [[Jimmy Connors]] || 7–6, 6–1, 4–6, 6–4
|-
| 1980 || {{Flagicon|USA}} '''[[Harold Solomon]] || {{Flagicon|ARG}} [[Guillermo Vilas]] || 6–7, 6–2, 6–4, 2–6, 6–3
|-
| 1979 || {{Flagicon|ESP|1977}} '''[[José Higueras]] || {{Flagicon|USA}} [[Harold Solomon]] || 3–6, 6–1, 6–4, 6–1
|-
| 1978 || {{Flagicon|ARG}} '''[[Guillermo Vilas]] || {{Flagicon|POL}} [[Wojtek Fibak]] || 6–2, 6–4, 6–2
|-
|colspan=5 align=center|↑&nbsp;&nbsp;[[Grand Prix Tennis Championship Series 1970–1989|GP Championship Series]]&nbsp;&nbsp;↑
|-
| 1977 || {{Flagicon|ITA}} '''[[Paolo Bertolucci]] || {{Flagicon|ESP|1977}} [[Manuel Orantes]] || 6–3, 4–6, 6–2, 6–3
|-
| 1976 || {{Flagicon|USA}} '''[[Eddie Dibbs]] || {{Flagicon|ESP|1945}} [[Manuel Orantes]] || 6–4, 4–6, 6–1, 2–6, 6–1
|-
| 1975 || {{Flagicon|ESP|1945}} '''[[Manuel Orantes]] || {{Flagicon|TCH}} [[Jan Kodeš]] || 3–6, 6–2, 6–2, 4–6, 6–1
|-
| 1974 || {{Flagicon|USA}} '''[[Eddie Dibbs]] || {{Flagicon|FRG}} [[Hans-Joachim Plötz]] || 6–2, 6–2, 6–3
|-
| 1973 || {{Flagicon|USA}} '''[[Eddie Dibbs]] || {{Flagicon|FRG}} [[Karl Meiler]] || 6–1, 3–6, 7–6, 6–3
|-
| 1972 || {{Flagicon|ESP|1945}} '''[[Manuel Orantes]] || {{Flagicon|ITA}} [[Adriano Panatta]] || 6–3, 9–8, 6–0
|-
| 1971 || {{Flagicon|ESP|1945}} '''[[Andrés Gimeno]] || {{Flagicon|HUN}} [[Péter Szőke]] || 6–3, 6–2, 6–2
|-
| 1970 || {{Flagicon|NED}} '''[[Tom Okker]] || {{Flagicon|ROU|1965}} [[Ilie Năstase]] || 4–6, 6–3, 6–3, 6–4
|-
| 1969 || {{Flagicon|AUS}} '''[[Tony Roche]] || {{Flagicon|NED}} [[Tom Okker]] || 6–1, 5–7, 7–5, 8–6
|-
| 1968 || {{Flagicon|AUS}} '''[[John Newcombe]] || {{Flagicon|RSA|1928}} [[Cliff Drysdale]] || 6–3, 6–2, 6–4
|-
| 1967 || {{Flagicon|AUS}} '''[[Roy Emerson]] || {{Flagicon|ESP|1945}} [[Manuel Santana]] || 6–3, 6–3, 6–1
|-
| 1966 || {{Flagicon|AUS}} '''[[Fred Stolle]] || {{Flagicon|HUN}} [[István Gulyás]] || 2–6, 7–5, 6–1, 6–2
|-
| 1965 || {{Flagicon|RSA|1928}} '''[[Cliff Drysdale]]|| {{Flagicon|YUG}} [[Boro Jovanović]] || 6–2, 6–4, 3–6, 6–3
|-
| 1964 || {{Flagicon|FRG}} '''[[Wilhelm Bungert]] || {{Flagicon|FRG}} [[Christian Kuhnke]] || 0–6, 6–4, 7–5, 6–2
|-
| 1963 || {{Flagicon|AUS}} '''[[Martin Mulligan]]|| {{Flagicon|RSA|1928}} [[Bob Hewitt]] || 6–0, 0–6, 8–6, 6–2
|-
| 1962 || {{Flagicon|AUS}} '''[[Rod Laver]] || {{Flagicon|ESP|1945}} [[Manuel Santana]] || 8–6, 7–5, 6–4
|-
| 1961 || {{Flagicon|AUS}} '''[[Rod Laver]] || {{Flagicon|CHI}} [[Luis Ayala (tennis)|Luis Ayala]] || 6–2, 6–8, 5–7, 6–1, 6–2
|-
| 1960 || {{Flagicon|ITA}} '''[[Nicola Pietrangeli]] || {{Flagicon|SWE}} [[Jan-Erik Lundquist]] || 6–3, 2–6, 6–4, 6–2
|-
| 1959 || {{Flagicon|GBR}} '''[[Billy Knight (tennis)|William Knight]] || {{Flagicon|RSA|1928}} [[Ian Vermaak]] || 4–6, 6–4, 4–6, 6–3, 8–6
|-
| 1958 || {{Flagicon|SWE}} '''[[Sven Davidson]] || {{Flagicon|BEL}} [[Jacques Brichant]] || 5–7, 6–4, 0–6, 9–7, 6–3
|-
| 1957 || {{Flagicon|AUS}} '''[[Mervyn Rose]] || {{Flagicon|FRA}} [[Pierre Darmon]] || 6–3, 6–0, 6–1
|-
| 1956 || {{Flagicon|AUS}} '''[[Lew Hoad]] || {{Flagicon|ITA}} [[Orlando Sirola]] || 6–2, 5–7, 6–4, 8–6
|-
| 1955 || {{Flagicon|USA|1912}} '''[[Arthur Larsen]] || {{Flagicon|POL}} [[Władysław Skonecki]] || 3–6, 6–3, 7–5, 6–8, 6–3
|-
| 1954 || {{Flagicon|USA|1912}} '''[[Budge Patty]] || {{Flagicon|SWE}} [[Sven Davidson]] || 6–1, 6–1, 7–5
|-
| 1953 || {{Flagicon|USA|1912}} '''[[Budge Patty]] || {{Flagicon|ITA}} [[Fausto Gardini]] || 6–3, 6–2, 6–3
|-
| 1952 || {{Flagicon|RSA|1928}} '''[[Eric Sturgess]] || {{Flagicon|EGY|1952}} [[Jaroslav Drobný]] || 6–3, 6–2, 6–3
|-
| 1951 || {{Flagicon|SWE}} '''[[Lennart Bergelin]] || {{Flagicon|SWE}} [[Sven Davidson]] || 4–6, 6–3, 4–6, 6–4, 7–5
|-
| 1950 || {{Flagicon|EGY|1922}} '''[[Jaroslav Drobný]] || {{Flagicon|FRG}} [[Gottfried von Cramm]] || 6–3, 6–4, 6–4
|-
| 1949 || {{Flagicon|FRG}} '''[[Gottfried von Cramm]] || {{Flagicon|FRG}} [[Ernst Buchholz]] || 7–5, 6–1, 6–0
|-
| 1948 || {{Flagicon|FRG}} '''[[Gottfried von Cramm]] || {{Flagicon|FRG}} [[Helmut Gulcz]] || 6–4, 6–1, 4–6, 6–3
|-
| style="background:#cfcfcf"|1940–1947 || colspan=3 align=center style="background:#cfcfcf" | ''Not Held''
|-
| 1939 || {{Flagicon|Nazi Germany}} '''[[Henner Henkel]] || {{Flagicon|TCH}} [[Roderich Menzel]] || 4–6, 6–4, 6–0, 6–1
|-
| 1938 || {{Flagicon|HUN|1920}} '''[[Ottó Szigeti]] || {{Flagicon|FRA}} [[Bernard Destremau]] || 8–6, 6–8, 6–3, 6–3
|-
| 1937 || {{Flagicon|Nazi Germany}} '''[[Henner Henkel]] || {{Flagicon|AUS}} [[Vivian McGrath]] || 1–6, 6–3, 8–6, 3–6, 6–1
|-
| style="background:#cfcfcf"|1936 || colspan=3 align=center style="background:#cfcfcf" | ''Not Held''
|-
| 1935 || {{Flagicon|Nazi Germany}} '''[[Gottfried von Cramm]] || {{Flagicon|HUN|1920}} [[Ottó Szigeti]] || 6–3, 6–3, 6–3
|-
| 1934 || {{Flagicon|Nazi Germany}} '''[[Gottfried von Cramm]] || {{Flagicon|USA|1912}} [[Clayton Lee Burwell]] || 6–2, 6–1, 6–4
|-
| 1933 || {{Flagicon|Nazi Germany}} '''[[Gottfried von Cramm]] || {{Flagicon|TCH}} [[Roderich Menzel]] || 7–5, 2–6, 4–6, 6–3, 6–4
|-
| 1932 || {{Flagicon|Weimar Republic}} '''[[Gottfried von Cramm]] || {{Flagicon|TCH}} [[Roderich Menzel]] || 3–6, 6–2, 6–2, 6–3
|-
| 1931 || {{Flagicon|TCH}} '''[[Roderich Menzel]] || {{Flagicon|Weimar Republic}} [[Gustav Jaenecke]] || 6–2, 6–2, 6–1
|-
| 1930 || {{Flagicon|FRA}} '''[[Christian Boussus]] || {{Flagicon|JPN}} [[Yoshiro Ohta]] || 1–6, 8–6, 2–6, 6–4, 6–4
|-
| 1929 || {{Flagicon|FRA}} '''[[Christian Boussus]] || {{Flagicon|Weimar Republic}} [[Otto Froitzheim]] || 6–1, 4–6, 6–1, 6–8, 6–1
|-
| 1928 || {{Flagicon|Weimar Republic}} '''[[Daniel Prenn]] || {{Flagicon|Weimar Republic}} [[Hans Moldenhauer]] || 6–1, 6–4, 6–3
|-
| 1927 || {{Flagicon|Weimar Republic}} '''[[Hans Moldenhauer]] || {{Flagicon|Weimar Republic}} [[Willy Hannemann]] || 6–2, 4–6, 6–4, 6–4
|-
| 1926 || {{Flagicon|Weimar Republic}} '''[[Hans Moldenhauer]] || {{Flagicon|Weimar Republic}} [[Walter Dessart]] || 6–2, 6–2, 6–1
|-
| 1925 || {{Flagicon|Weimar Republic}} '''[[Otto Froitzheim]] || {{Flagicon|HUN|1920}} [[Béla von Kehrling]] || 6–4, 6–1, 4–6, 6–1
|-
| 1924 || {{Flagicon|HUN|1920}} '''[[Béla von Kehrling]] || {{Flagicon|Weimar Republic}} [[Luis Maria Heyden]] || 8–6, 6–1, 9–7
|-
| 1923 || {{Flagicon|Weimar Republic}} '''[[Heinz Landmann]] || {{Flagicon|Weimar Republic}} [[Luis Maria Heyden]] || 6–2, 6–3, 7–5
|-
| 1922 || {{Flagicon|Weimar Republic}} '''[[Otto Froitzheim]] || {{Flagicon|Weimar Republic}} [[Friedrich Wilhelm Rahe]] || 2–6, 6–0, 8–6, 6–1
|-
| 1921 || {{Flagicon|Weimar Republic}} '''[[Otto Froitzheim]] || {{Flagicon|Weimar Republic}} [[Robert Kleinschroth]] || 6–4, 8–6 (retired)
|-
| 1920 || {{Flagicon|Weimar Republic}} '''[[Oscar Kreuzer]] || {{Flagicon|Weimar Republic}} [[Luis Maria Heyden]] || 6–0, 6–0, 6–2
|-
| style="background:#cfcfcf"|1914–1919 || colspan=3 align=center style="background:#cfcfcf" | ''Not Held''
|-
| 1913 || {{Flagicon|German Empire}} '''[[Heinrich Schomburgk]] || {{Flagicon|German Empire}} [[Otto von Müller]] || 6–2, 6–4, 7–5
|-
| 1912 || {{Flagicon|German Empire}} '''[[Otto von Müller]] || {{Flagicon|German Empire}} [[Heinrich Schomburgk]] || 2–6, 6–1, 6–4, 6–2
|-
| 1911 || {{Flagicon|German Empire}} '''[[Otto Froitzheim]] || {{Flagicon|Austria-Hungary}} [[Felix Pipes]] || 6–3, 6–2, 6–1
|-
| 1910 || {{Flagicon|German Empire}} '''[[Otto Froitzheim]] || {{Flagicon|German Empire}} [[Kurt Bergmann]] || ''walkover''
|-
| 1909 || {{Flagicon|German Empire}} '''[[Otto Froitzheim]] || {{Flagicon|German Empire}} [[Friedrich Wilhelm Rahe]] || 6–0, 6–2, 6–3
|-
| 1908 || {{Flagicon|UKGBI}} ''' [[Josiah Ritchie]] || {{Flagicon|UKGBI}} [[George K. Logie]] || 6–1, 6–1, 6–3
|-
| 1907 || {{Flagicon|German Empire}} '''[[Otto Froitzheim]] || {{Flagicon|UKGBI}} [[Josiah Ritchie]] || 7–5, 6–3, 6–4
|-
| 1906 || {{Flagicon|UKGBI}} '''[[Josiah Ritchie]] || {{Flagicon|German Empire}} [[Friedrich Wilhelm Rahe]] || 6–2, 6–2, 6–0
|-
| 1905 || {{Flagicon|UKGBI}} '''[[Josiah Ritchie]] || {{Flagicon|NZL|}} [[Anthony Wilding]] || 8–6, 7–5, 8–6
|-
| 1904 || {{Flagicon|UKGBI}} '''[[Josiah Ritchie]] || {{Flagicon|Austria-Hungary}} [[Kurt von Wessely]] || 6–4, 6–0, 10–8
|-
| 1903 || {{Flagicon|UKGBI}} '''[[Josiah Ritchie]] || {{Flagicon|FRA}} [[Max Decugis]] || ''walkover''
|-
| 1902 || {{Flagicon|FRA}} '''[[Max Decugis]] || {{Flagicon|UKGBI}} [[John M. Flavelle]] || 4–6, 2–6, 7–5, 7–5, 6–0
|-
| 1901 || {{Flagicon|FRA}} '''[[Max Decugis]] || {{Flagicon|UKGBI}} [[Frederick W. Payn]] || 6–4, 6–4, 4–6, 6–2
|-
| 1900 || {{Flagicon|UKGBI}} '''[[George Hillyard (tennis)|George Hillyard]] || {{Flagicon|UKGBI}} [[Lawrence Doherty|Hugh Doherty]] || ''walkover''
|-
| 1899 || {{Flagicon|USA|1896}} '''[[Clarence Hobart]] || {{Flagicon|UKGBI}} [[Harold Mahoney]] || 8–6, 8–10, 6–0, 6–8, 8–6
|-
| 1898 || {{Flagicon|UKGBI}} '''[[Harold Mahoney]] || {{Flagicon|UKGBI}} [[Joshua Pim]] || 6–4, 6–3, 6–4
|-
| 1897 || {{Flagicon|UKGBI}} '''[[George Hillyard]] || {{Flagicon|UKGBI}} [[George C. Ball Green (tennis)|George C. Ball Green]] || 6–1, 6–2, 6–3
|-
| 1896 || {{Flagicon|German Empire}} '''[[Graf Victor Voß]] || {{Flagicon|German Empire}} [[Georg Wantzelius]] || 6–1, 6–0, 6–1
|-
| 1895 || {{Flagicon|German Empire}} '''[[Graf Victor Voß]] || {{Flagicon|German Empire}} [[Christian Winzer]] || 6–2, 6–1, 6–2
|-
| 1894 || {{Flagicon|German Empire}} '''[[Graf Victor Voß]] || {{Flagicon|German Empire}} [[Christian Winzer]] || 6–1, 6–4, 11–9
|-
| 1893 || {{Flagicon|German Empire}} '''[[Christian Winzer]] || {{Flagicon|German Empire}} [[Walter Bonne]] || 6–4, 6–0, 3–6, 6–3
|-
| 1892 || {{Flagicon|German Empire}} '''[[Walter Bonne]]''' || {{Flagicon|German Empire}} [[R.A. Leers]] || 7–5, 6–3
|}
 
 
 
== 스폰서 ==
익명 사용자