WATCH: Alberto Contador forced to abandon 2016 Tour de France

Spanish rider had suffered two falls in the earlier stages

ALberto Contador, Tour de France

Spain's Alberto Contador, left, strains as he rides in the back of the pack during the ninth stage of the Tour de France cycling race over 184.5 kilometers (114.3 miles) with start in Vielha Val d'Aran, Spain, and finish in Andorra Arcalis, Andorra, Sunday, July 10, 2016. (AP Photo/Christophe Ena)

One of the pre-event favourites to win this year's Tour de France has pulled out during the ninth stage.

Two-time champion Alberto Contador has been struggling with injuries.

The Spaniard stopped before getting into the team car, between Vielha Val d'Aran in Spain and Andorra-Arcalis in the Pyrenees.

Contador had suffered two falls in the first two days of action. The first had left him with road rash from his knee to his shoulder on his right side, although he avoided any muscular injuries.

The 33-year-old previously won the tour in 2007 and 2009.

In 2014, he also abandoned the Tour due to injury.