is a former

Grand Prix Grand Prix ( , meaning ''Grand Prize''; plural Grands Prix), is a name sometimes used for competitions or sport events, alluding to the winner receiving a prize, trophy or honour Grand Prix or grand prix may refer to: Arts and entertainment ...

motorcycle A motorcycle (motorbike, bike, or trike (if three-wheeled)) is a two or three-wheeled motor vehicle steered by a handlebar. Motorcycle design varies greatly to suit a range of different purposes: long-distance travel, commuting, cruising ...

road racer. His best seasons were in

2000 File:2000 Events Collage.png, From left, clockwise: Protests against Bush v. Gore after the 2000 United States presidential election; Heads of state meet for the Millennium Summit; The International Space Station in its infant form as seen from ...

, when he finished second in the 125cc world championship behind Roberto Locatelli and in

2001 The September 11 attacks against the United States by Al-Qaeda, which Casualties of the September 11 attacks, killed 2,977 people and instigated the global war on terror, were a defining event of 2001. The United States led a Participants in ...

, when he finished second behind

Manuel Poggiali Manuel Poggiali (; born 14 February 1983) is a Sammarinese Grand Prix motorcycle road racing World Champion. He was the 2001 125cc World Champion, and the 2003 250cc World Champion. He scored 12 race wins, 11 pole positions, and 35 podium finis ...

.Youichi Ui career statistics at MotoGP.com
/ref> With his 6 Grand Prix victories in 2001, Ui tied a record set by

Kenny Roberts Kenneth Leroy Roberts (born December 31, 1951, in Modesto, California) is an American former professional motorcycle racer and racing team owner. In 1978, he became the first American to win a Grand Prix motorcycle racing world championship. He ...

1983 The year 1983 saw both the official beginning of the Internet and the first mobile cellular telephone call. Events January * January 1 – The migration of the ARPANET to Internet protocol suite, TCP/IP is officially completed (this is consid ...

of most wins by a rider without winning a championship. He raced in Japan in 2007, winning the All Japan 250cc Road Race Championship.

By season

Grand Prix motorcycle racing

Races by year

(

key Key or The Key may refer to: Common meanings * Key (cryptography), a piece of information that controls the operation of a cryptography algorithm * Key (lock), device used to control access to places or facilities restricted by a lock * Key (map ...

) (Races in bold indicate pole position, races in ''italics'' indicate fastest lap)

References

{{DEFAULTSORT:Ui, Youichi Japanese motorcycle racers 125cc World Championship riders 250cc World Championship riders MotoGP World Championship riders 1972 births Living people Sportspeople from Chiba Prefecture