Yamaha Factory Racing's Jorge Lorenzo has made a flying start to this weekend's Australian Grand Prix, completing the first day of free practice as the fastest rider. The defending champion came out fighting in the first morning practice and led the session apart from a brief appearance by rival Marc Marquez at the top of the time sheets mid way through. A new tarmac surface at the track has vastly improved grip, allowing Lorenzo to drop almost a second under the race record in the morning.