Petrucci hit the very top of the times in the 20-minute session with a historical lap of 1m55.464therefore, then put himself beyond the reach of his rivals after advancing into a 1m54.807s.
Reigning champion Marc Marquez rescued his best lap until last, but the Honda man’s 1m54.864s campaign dropped 0.057s in short supply of Petrucci’s benchmark.
The single driver to breach the 1m55s mark was Suzuki’s Alex Rins onto a 1m54.943s.
Takaaki Nakagami (LCR Honda) beat Ducati set Andrea Dovizioso and Jack Miller to sixth, while Espargaro brothers Aleix (Aprilia) and Pol (KTM) assured all six marques were represented in the upper ten.
Valentino Rossi has been 11th-fastest and 0.751s off the pace on the 2nd works Yamaha ahead of a race he also expects to be”difficult” out of his starting slot of 14 th .
Honda’s Jorge Lorenzo, who admitted he had been in”pain anyplace” following two crashes on Saturday, ended warmup down in 20th spot, 1.7s off the pace.