GP3 Series championship leader Mitch Evans set the pace in Friday's practice for the final rounds at Monza this weekend.
The 18-year-old New Zealander moved to the top of the times halfway into the 45-minute session, before dropping down the field as first Tamas Pal Kiss and then one of Evans's title challengers Aaro Vainio went quicker. Then with a minute to go left in the session Evans produced a 1m44.477s from his MW Arden machine to settle the matter ahead of teammate Matias Laine, with Lotus GP's Vainio third.
Pal Kiss for one was unable to respond, having come together with Fabiano Machado in the middle of the Ascari chicane, in an incident that was being investigated by the stewards.
Alex Brundle was among others that caused yellow flags for offs in the session.
Local boy Daniel Fumanelli was fourth fastest ahead Daniel Abt and Dmitry Suranovich, with Pal Kiss eventually dropping to seventh in the fastest of the Atech CRS cars.
Giovanni Venturini, Will Buller and Robert Visiou completed the top ten, while Antonio Felix da Costa, the series form man and Evans's primary rival could manage no better than 15th, having set the pace in the opening minutes of the session.