List of Grand Prix motorcycle racing World champions
By rider
Table:
Grand Prix motorcycle racing World champions

Rank

Rider

Country

Winning span

MotoGP/500cc

350cc

Moto2/250cc

Moto3/125cc

80cc/50cc

Total

1

Giacomo Agostini

Italy

1966–1975

8

7

0

0

0

15

2

Ángel Nieto

Spain

1969–1984

0

0

0

7

6

13

3

Valentino Rossi

Italy

1997–2009

7

0

1

1

0

9

3

Mike Hailwood

United Kingdom

1961–1967

4

2

3

0

0

9

3

Carlo Ubbiali

Italy

1951–1960

0

0

3

6

0

9

6

Marc Márquez

Spain

2010–2018

5

0

1

1

0

7

6

John Surtees

United Kingdom

1956–1960

4

3

0

0

0

7

6

Phil Read

United Kingdom

1964–1974

2

0

4

1

0

7

9

Geoff Duke

United Kingdom

1951–1955

4

2

0

0

0

6

9

Jim Redman

Rhodesia

1962–1965

0

4

2

0

0

6

11

Mick Doohan

Australia

1994–1998

5

0

0

0

0

5

11

Jorge Lorenzo

Spain

2006–2015

3

0

2

0

0

5

11

Anton Mang

Germany

1980–1987

0

2

3

0

0

5

14

Eddie Lawson

United States

1984–1989

4

0

0

0

0

4

14

Kork Ballington

South Africa

1978–1979

0

2

2

0

0

4

14

Walter Villa

Italy

1974–1976

0

1

3

0

0

4

14

Max Biaggi

Italy

1994–1997

0

0

4

0

0

4

14

Hugh Anderson

New Zealand

1963–1965

0

0

0

2

2

4

14

Jorge Martínez

Spain

1986–1988

0

0

0

1

3

4

14

Stefan Dörflinger

Switzerland

1982–1985

0

0

0

0

4

4

21

Kenny Roberts

United States

1978–1980

3

0

0

0

0

3

21

Wayne Rainey

United States

1990–1992

3

0

0

0

0

3

21

Freddie Spencer

United States

1983–1985

2

0

1

0

0

3

21

Bruno Ruffo

Italy

1949–1951

0

0

2

1

0

3

21

Werner Haas

Germany

1953–1954

0

0

2

1

0

3

21

Luca Cadalora

Italy

1986–1992

0

0

2

1

0

3

21

Dani Pedrosa

Spain

2003–2005

0

0

2

1

0

3

21

Loris Capirossi

Italy

1990–1998

0

0

1

2

0

3

21

Luigi Taveri

Switzerland

1962–1966

0

0

0

3

0

3

21

Pier Paolo Bianchi

Italy

1976–1980

0

0

0

3

0

3

21

Hans Georg Anscheidt

Germany

1966–1968

0

0

0

0

3

3

21

Eugenio Lazzarini

Italy

1978–1980

0

0

0

1

2

3

33

Umberto Masetti

Italy

1950–1952

2

0

0

0

0

2

33

Barry Sheene

United Kingdom

1976–1977

2

0

0

0

0

2

33

Casey Stoner

Australia

2007–2011

2

0

0

0

0

2

33

Gary Hocking

Rhodesia and Nyasaland

1961

1

1

0

0

0

2

33

Àlex Crivillé

Spain

1989–1999

1

0

0

1

0

2

33

Bill Lomas

United Kingdom

1955–1956

0

2

0

0

0

2

33

Fergus Anderson

United Kingdom

1953–1954

0

2

0

0

0

2

33

Carlos Lavado

Venezuela

1983–1986

0

0

2

0

0

2

33

Sito Pons

Spain

1988–1989

0

0

2

0

0

2

33

Johann Zarco

France

2015–2016

0

0

2

0

0

2

33

Cecil Sandford

United Kingdom

1952–1957

0

0

1

1

0

2

33

Tarquinio Provini

Italy

1957–1958

0

0

1

1

0

2

33

Dieter Braun

Germany

1970–1973

0

0

1

1

0

2

33

Manuel Poggiali

San Marino

2001–2003

0

0

1

1

0

2

33

Kent Andersson

Sweden

1973–1974

0

0

0

2

0

2

33

Fausto Gresini

Italy

1985–1987

0

0

0

2

0

2

33

Kazuto Sakata

Japan

1994–1998

0

0

0

2

0

2

33

Haruchika Aoki

Japan

1995–1996

0

0

0

2

0

2

33

Jan de Vries

Netherlands

1971–1973

0

0

0

0

2

2

33

Ricardo Tormo

Spain

1978–1981

0

0

0

0

2

2

53

Leslie Graham

United Kingdom

1949

1

0

0

0

0

1

53

Libero Liberati

Italy

1957

1

0

0

0

0

1

53

Marco Lucchinelli

Italy

1981

1

0

0

0

0

1

53

Franco Uncini

Italy

1982

1

0

0

0

0

1

53

Wayne Gardner

Australia

1987

1

0

0

0

0

1

53

Kevin Schwantz

United States

1993

1

0

0

0

0

1

53

Kenny Roberts, Jr.

United States

2000

1

0

0

0

0

1

53

Nicky Hayden

United States

2006

1

0

0

0

0

1

53

Freddie Frith

United Kingdom

1949

0

1

0

0

0

1

53

Bob Foster

United Kingdom

1950

0

1

0

0

0

1

53

Keith Campbell

Australia

1957

0

1

0

0

0

1

53

Johnny Cecotto

Venezuela

1975

0

1

0

0

0

1

53

Takazumi Katayama

Japan

1977

0

1

0

0

0

1

53

Jon Ekerold

South Africa

1980

0

1

0

0

0

1

53

Dario Ambrosini

Italy

1950

0

0

1

0

0

1

53

Enrico Lorenzetti

Italy

1952

0

0

1

0

0

1

53

Hermann Paul Müller

Germany

1955

0

0

1

0

0

1

53

Rodney Gould

United Kingdom

1970

0

0

1

0

0

1

53

Kel Carruthers

Australia

1969

0

0

1

0

0

1

53

Jarno Saarinen

Finland

1972

0

0

1

0

0

1

53

Mario Lega

Italy

1977

0

0

1

0

0

1

53

Jean-Louis Tournadre

France

1982

0

0

1

0

0

1

53

Christian Sarron

France

1984

0

0

1

0

0

1

53

John Kocinski

United States

1990

0

0

1

0

0

1

53

Tetsuya Harada

Japan

1993

0

0

1

0

0

1

53

Olivier Jacque

France

2000

0

0

1

0

0

1

53

Daijiro Kato

Japan

2001

0

0

1

0

0

1

53

Marco Melandri

Italy

2002

0

0

1

0

0

1

53

Marco Simoncelli

Italy

2008

0

0

1

0

0

1

53

Hiroshi Aoyama

Japan

2009

0

0

1

0

0

1

53

Toni Elías

Spain

2010

0

0

1

0

0

1

53

Stefan Bradl

Germany

2011

0

0

1

0

0

1

53

Pol Espargaró

Spain

2013

0

0

1

0

0

1

53

Esteve Rabat

Spain

2014

0

0

1

0

0

1

53

Franco Morbidelli

Italy

2017

0

0

1

0

0

1

53

Francesco Bagnaia

Italy

2018

0

0

1

0

0

1

53

Nello Pagani

Italy

1949

0

0

0

1

0

1

53

Rupert Hollaus

Austria

1954

0

0

0

1

0

1

53

Tom Phillis

Australia

1961

0

0

0

1

0

1

53

Bill Ivy

United Kingdom

1967

0

0

0

1

0

1

53

Dave Simmonds

United Kingdom

1969

0

0

0

1

0

1

53

Paolo Pileri

Italy

1975

0

0

0

1

0

1

53

Alessandro Gramigni

Italy

1992

0

0

0

1

0

1

53

Dirk Raudies

Germany

1993

0

0

0

1

0

1

53

Emilio Alzamora

Spain

1999

0

0

0

1

0

1

53

Roberto Locatelli

Italy

2000

0

0

0

1

0

1

53

Arnaud Vincent

France

2002

0

0

0

1

0

1

53

Andrea Dovizioso

Italy

2004

0

0

0

1

0

1

53

Thomas Lüthi

Switzerland

2005

0

0

0

1

0

1

53

Álvaro Bautista

Spain

2006

0

0

0

1

0

1

53

Gábor Talmácsi

Hungary

2007

0

0

0

1

0

1

53

Mike Di Meglio

France

2008

0

0

0

1

0

1

53

Julián Simón

Spain

2009

0

0

0

1

0

1

53

Nicolás Terol

Spain

2011

0

0

0

1

0

1

53

Sandro Cortese

Germany

2012

0

0

0

1

0

1

53

Maverick Viñales

Spain

2013

0

0

0

1

0

1

53

Alex Márquez

Spain

2014

0

0

0

1

0

1

53

Danny Kent

United Kingdom

2015

0

0

0

1

0

1

53

Brad Binder

South Africa

2016

0

0

0

1

0

1

53

Joan Mir

Spain

2017

0

0

0

1

0

1

53

Jorge Martín

Spain

2018

0

0

0

1

0

1

53

Ernst Degner

Germany

1962

0

0

0

0

1

1

53

Ralph Bryans

United Kingdom

1965

0

0

0

0

1

1

53

Henk van Kessel

Netherlands

1974

0

0

0

0

1

1

53

Manuel Herreros

Spain

1989

0

0

0

0

1

1

Given the tabular data covering 'List of Grand Prix motorcycle racing World champions' (see 'By rider'), give a one-line statement limited to the highlighted cells and provide it inside the JSON object {"answer": "YOUR ANSWER"}.