The premier class got another hour to enjoy the wonders of the Algarve Circuit and nice warm asphalt welcomed them and opened the floodgates on times in the 1:39s. While KTM and Honda hogged the limelight early in the session, it was Yamaha and Ducati who fought for the lead by the final time attack. Ducati got the upper hand this time out and it was courtesy of Johann Zarco aboard the 2019 machine, the Frenchman one tenth of a second faster than Maverick Vinales. Aleix Espargaro was once more inside the top three, two tenths off top spot and ahead of Fabio Quartararo.
Brad Binder rounded out the top five, while Joan Mir found himself outside of the top 10 positions going into his last flying lap but the world champion used that final lap well and climbed into sixth. Andrea Dovizioso was in a similar situation as he claimed 7th place, ahead of Pol Espargaro. Jack Miller and Franco Morbidelli completed the top 10 positions, while Stefan Bradl missed out by two hundredths of a second. The Honda rider continued to have a good day in Portugal, as he spent significant time at the top of the timesheets before dropping outside the top 10 despite being less than half a second off top spot.
Takaaki Nakagami had an eventful afternoon, the LCR man going down at turn 4 in the final 30 minutes of the extended session and he was able to rejoin and improve his laptime but still got pushed down to 12th. Miguel Oliveira started the session at the top of the timesheets but the home favourite got demoted in the late battle for the top 10 and dropped back to 13th. Alex Rins will hope to improve on 17th position on the combined standings on Saturday morning, although the Spaniard was within only eight tenths of top spot. Turn 4 proved problematic for Valentino Rossi as well, the Italian rejoining the action after a late crash but only fast enough for 21st position.