Ducati has just confirmed that Casey Stoner will be on track tomorrow, for day two of the official Sepang MotoGP test.

It will mark the first time the double world champion has ridden alongside MotoGP race riders, and with official timing, since retiring at the end of 2012.

While Stoner previously competed against Jorge Lorenzo, Valentino Rossi and Dani Pedrosa, he has not been on track with the likes of double champion Marc Marquez, who took over his Repsol Honda seat in 2013.

Stoner made his Ducati return during a private test at Sepang on Saturday, when the 30-year-old Australian set a best lap time of 2m 2.1s on a dirty track (using last year's GP15).

As of 3:30pm on Monday, Stoner's Saturday lap time would have put him fifth fastest. The quickest Ducati laps so far are a 2m 1.8s by Pramac's Danilo Petrucci and 2m 1.9s by factory rider Andrea Iannone.

It is not clear if Stoner will stick with the GP15, or try the new GP16.