Moto2 world champion Marc Marquez turned heads by lapping an impressive 1.081s from the top during a 28-lap
MotoGP debut on the final day of a rain-delayed Valencia test.
Below is a list of some other first-day
MotoGP performances by riders that have recently made their premier-class debuts.
Casey Stoner - pictured on his
MotoGP test debut for Honda Pons - stands head-and-shoulders clear of the rest.
Conditions at the 2005 test were cool and windy
on day one, when Stoner and
Dani Pedrosa made their
MotoGP debuts, then wet throughout day two.
This year's test saw a wet first day, when the likes of Marquez and fellow rookie Bradley Smith did not ride, with dry laps on the final afternoon.
Future double world champion Stoner later switched to LCR Honda for his first 2006
MotoGP season...
Rookies: Time difference to fastest rider after first day at an official MotoGP test:Casey Stoner AUS Pons Honda
+0.64s (Valencia 2005)
Marc Marquez ESP Repsol Honda
+1.081s (Valencia 2012)
Dani Pedrosa* ESP Repsol Honda
+1.1s (Valencia 2005)
Andrea Iannone*** ITA Pramac Ducati
+1.511s (Valencia 2012)
Jorge Lorenzo* ESP Fiat Yamaha
+1.982s (Valencia 2007)
Stefan Bradl GER LCR Honda
+2.144sec (Valencia 2011)
Bradley Smith GBR Tech 3 Yamaha
+2.216s (Valencia 2012)
Cal Crutchlow* GBR Tech 3 Yamaha
+2.302s (Valencia 2010)
Andrea Dovizioso* ITA Scot/JiR Honda
+2.412s (Valencia 2007)
Marco Simoncelli ITA Gresini Honda
+2.569sec (Valencia 2009)
Jonathan Rea** GBR Repsol Honda
+3.134s (Brno 2012)
Hector Barbera ESP Aspar Ducati
+3.544sec (Valencia 2009)
Alvaro Bautista ESP Interwetten Honda
+5.304sec (Valencia 2009)
* Had previously ridden a
MotoGP bike.
** Brno is a 2m lap, compared with 1m 30s for Valencia.
*** Had previously ridden a
MotoGP bike and also rode some wet laps on day one at Valencia 2012.