Behind only Jorge Lorenzo in morning practice, title leader Marc Marquez's first day on a MotoGP bike at Phillip Island took an unwanted twist early in the afternoon session.

The rookie Repsol Honda star - who has the first of three chances to win this year's title on Sunday - was kicked from his RCV after the rear stepped-out over Lukey Heights (see below for full sequence).

"On the crash I opened the gas at the same place, but when I tried to open it a little bit more the rear was sliding so aggressively. Maybe I opened a little too much. I know now that I can't open more gas in that corner!" he smiled.

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But the fall wasn't without consequences. Marquez's spare RCV had a different set-up and he finished the afternoon in sixth place, one-second behind Lorenzo and as the only rider in the top 17 not to improve in FP2.

"The problem this afternoon was that on the number one bike we started with all the same settings as this morning, but on bike number two we changed the geometry to try and make a big change," explained Marquez.

"When I crashed the number one and tried number two I didn't like it, but we didn't have enough time to make changes. Anyway overall I am quite happy, especially with this morning and for tomorrow we know the way to go."

Marquez's morning time kept him second overall, 0.294s behind Lorenzo on the resurfaced circuit.