Marc Marquez and Alex Marquez locked out the top two spots in Sepang Practice, with Marc still going fastest after an early crash and a 1:57.000 lap that left him 0.109 seconds clear of his brother. Jorge Martin was withdrawn from the rest of the session after a scare at Turn 12, and Aprilia and the doctors decided it was too risky for him to continue after he had been riding with a broken wrist from a crash at Phillip Island the previous Saturday.
Ai Ogura finished third, Pedro Acosta was fourth and Fabio Di Giannantonio was fifth. Marco Bezzecchi, Enea Bastianini, Maverick Vinales, Franco Morbidelli and Joan Mir secured direct Q2 places, while Brad Binder was the only KTM rider outside those spots and had to go through Q1.
Johann Zarco and Pecco Bagnaia both crashed on their final runs. Martin ended the day 21st and last among the classified riders.
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