Reigning world champion Valentino Rossi is desperate for victory in the British Grand Prix before heading to his three least favourite circuits on the MotoGP calendar.

Valentino Rossi made it five wins from six races with victory in the Catalunya Grand Prix to extend his lead at the top of the MotoGP world championship standings to 58 points.

Alex Barros capped a dominant weekend with victory in a dramatic Portuguese Grand Prix at a wet Estoril.