Bradley Smith topped a rain-hit MotoGP test at the Barcelona circuit on Monday following the Catalan Grand Prix.
A heavy thunderstorm and showers hit the track at midday, altering the teams' programmes and making others call it a day early.
Race winner Jorge Lorenzo and Yamaha teammate Valentino Rossi, who were scheduled to test new parts today, decided not to test as the conditions were too poor to make their time comparable with those of the previous days.
Tech 3 Yamaha rider Smith led the way with a best time of 1:42.018, set before the rain hit the circuit.
The Briton finished ahead of the Suzukis of Maverick Vinales and Aleix Espargaro, both continuing to show good pace after a promising weekend.
World champion Marc Marquez went fourth fastest after running in the opening 90 minutes of the session, before the rain arrived.
Teammate Dani Pedrosa, third in Sunday's race, was sixth quickest today, the Honda duo split by Yonny Hernandez on the Pramac Ducati.
|1||Bradley Smith||Monster Yamaha Tech 3||1'42.018|
|2||Maverick Vinales||Team Suzuki Ecstar||1'42.069|
|3||Aleix Espargaro||Team Suzuki Ecstar||1'42.127|
|4||Marc Marquez||Repsol Honda Team||1'42.197|
|5||Yonny Hernandez||Pramac Racing||1'42.332|
|6||Dani Pedrosa||Repsol Honda Team||1'42.386|
|7||Jack Miller||CWM LCR Honda||1'42.512|
|8||Pol Espargaro||Monster Yamaha Tech 3||1'42.673|
|9||Stefan Bradl||Athina Forward Racing||1'42.747|
|10||Cal Crutchlow||CWM LCR Honda||1'42.857|
|11||Nicky Hayden||Aspar MotoGP Team||1'42.949|
|12||Scott Redding||Estrella Galicia 0,0 Marc VDS||1'43.134|
|13||Danilo Petrucci||Pramac Racing||1'43.143|
|14||Alvaro Bautista||Aprilia Racing Team Gresini||1'43.219|
|15||Mike Di Meglio||Avintia Racing||1'44.054|
|16||Loris Baz||Athina Forward Racing||1'44.249|
|17||Eugene Laverty||Aspar MotoGP Team||1'44.517|
|18||Marco Melandri||Aprilia Racing Team Gresini||1'45.107|