Nicky Hayden made it a Ducati one-five in Qatar opening practice, after a late surge up the order.
“We took a little while getting going today,” said Hayden, whose best lap was almost 1.3sec behind team-mate Casey Stoner. “We had just a little bit of confusion around the tyre choice at the start.
“I just couldn't get a feeling for the bike for the first 20 minutes when we were on the softer tyre, but when we switched to a hard tyre things picked up straight away and I was able to improve the lap times.
“I went about as fast as I did at the test consistently so that's encouraging. This is a good start to the season even if we have plenty of room for improvement.”