Finnish driver Kimi Raikkonen set the fastest time of pre-season testing as the Formula One world paid tribute to former champion John Surtees, who died on Friday.
Raikkonen edged to within three tenths of the track record in 1min 18.634sec to register the fastest time of the day by nearly a second.
Ferrari led the tributes to Surtees, who is the only man to win world championships in both Formula One and motorcycle grand prix racing.
"John Surtees, Motorsport legend and 1964 World Champion with Ferrari, passed away. Our thoughts are with his family," the Italian team tweeted.
Raikkonen didn't have a completely trouble free day, though, as his running in the afternoon session was interrupted by a breakdown.
Three-time world champion Lewis Hamilton claimed Ferrari were "bluffing" with their eye-catching testing times on Thursday and Mercedes may be keeping their powder dry for the first Grand Prix of the year in Melbourne on March 26.
Valtteri Bottas was well over a second back on Raikkonen in fourth on the same supersoft tyre compound with Hamilton fifth fastest after taking over for the afternoon session.
However, the Mercedes pair logged over 100 laps as the defending world champions were the only team to complete over 5,000 kilometres over the eight days of testing.
Dutch wonderkid Max Verstappen was second fastest as Red Bull again showed that they look set to be the third force behind Mercedes and Ferrari this season.
Fernando Alonso and McLaren's misery continued, though, as the two-time world champion broke down with the same electrical problems that saw Stoffel Vandoorne stop twice on Thursday.
Alonso eventually got 43 laps under his belt but was once again relegated to 11th fastest among the 13 drivers in action on the timesheets.