Marc Marquez expects his younger brother Alex to be his main rival as he chases a seventh MotoGP world championship crown and is convinced it is just a matter of time before the Gresini Racing rider wins his first race in the premier class.

Alex Marquez led much of the way in Argentina, but ultimately had to give best to brother Marc who now has four wins from four races (two sprints and two grands prix) this year

After working hard to defeat his brother in the Argentina GP, Marc Marquez declared that Alex has a genuine shot at adding to his Moto2 and Moto3 world titles this season