Alberto Contador Velasco is a Spanish professional cyclist. He is famous as one of the five riders to have won all three Grand Tours of road cycling. Contador has been widely considered to be the best climbing specialist and stage racer in the world. as earned a reputation as an all-rounder, a cyclist who excels in all aspects of stage racing which are needed for high places in the general classification. Contador turned professional in 2003 for ONCE-Eroski. In his first year as a professional he won the eighth stage of the Tour de Pologne, an individual time trial. In 2006, he won stages at the Tour de Romandie and Tour de Suisse in preparation for the Tour de France. Contador's first major professional victory came with the 2007 Paris–Nice, which he won on the race's final stage. On 21 February, Contador won his first race of the season, the Volta ao Algarve, by winning its queen stage and finishing second in the final time trial
His profile is replete with plaudits and achievements. He was the winner of the 2007 Tour de France with theDiscovery Channel team. He won the 2008 Giro d'Italia, the 2008 Vuelta a Espana and the 2009 Tour de France with the Astana team. He also won the 2012 Vuelta a Espana.