Pol Espargaró
Hazy weather conditions continued to affect Sepang heading into the third practice session which had Lorenzo improve on his previous best time from the day prior to record the fastest lap of the weekend so far late in practice at one minute and 59.544 seconds with Márquez following 0.142 seconds behind in second. Pedrosa was third-fastest, Rossi placed fourth and Barberá fifth. Crutchlow, Aleix Espargaró, Dovizioso, Pol Espargaró and Maverick Viñales occupied positions six through ten. Late in the session, Petrucci lost control of the front of his bike and crashed out at turn seven. Petrucci was unhurt. Pedrosa topped the time sheets in the fourth practice session with a lap time of two minutes and 00.471 seconds. Márquez was 0.322 seconds slower in second place and Iannone was running stronger and set the third-fastest lap. Lorenzo was fourth-quickest; Rossi was fifth and Dovizioso sixth. Aleix Espargaró placed seventh, his brother Pol Espargaró was eighth, Redding ninth and Bradley Smith completed the top ten ahead of qualifying. The sole incident of the session occurred halfway through when the front of Lorenzo's bike got loose and slid into the gravel trap at the final corner.