Monza, Italy - Charles Leclerc again set the pace for Ferrari as the Italian team led a crash-strewn first practice for its home grand prix at a soggy Monza on Friday.
The 21-year-old Monegasque, on a high after his first Formula One victory in Belgium last weekend, lapped the historic circuit near Milan with a quickest time of one minute 27.905 seconds.
Ferrari and Monza are both celebrating 90th anniversaries this weekend, with a big crowd already on Friday despite the wet weather.
The morning featured three red flags and was hardly representative, however, with McLaren's Carlos Sainz and Lando Norris second and third on the timesheets and the track drying towards the end after heavy overnight rain.
Five-times world champion Lewis Hamilton, last year's winner for Mercedes, set the fourth fastest lap of 1:28.730 while Leclerc's German team-mate Sebastian Vettel was only eighth quickest and 2.6 seconds off the pace.