Fernando Alonso's hard crash into the wall at the end of Turn 3 saw the chequered flag brought out early at lunch on Day Four at Barcelona.
The double World Champion once again had a torrid day in his McLaren-Honda.
One of the last to get out on track as McLaren replaced the MGU-K seal – yet another new design, Alonso managed just 20 laps before he hit the wall.
Out on track 10 minutes before the lunch break, he reportedly crashed hard into the wall at the exit of Turn 3 bringing an early end to the morning's session.
He was taken to the track's medical centre via ambulance but the track's official twitter feed is reporting he is "ok and conscious."
Alonso finished the morning in fifth place with a best time of 1:27.956, which was 2.352s short of the pace-setting time set by Carlos Sainz Jr.
The Toro Rosso rookie posted a 1:25.604 on the super-soft tyres to edge Sebastian Vettel's 1:26.312, which he set on the soft tyres, by 0.708s.
Nico Hulkenberg, another to put in a soft tyre run in his 2014 VJM07, was third ahead of Nico Rosberg.
The Mercedes driver's best time was set on the medium tyres and came after a sheepish start to the morning when he spun off at Turn 5.
Romain Grosjean, in his first outing for the week, was sixth ahead of Daniil Kvyat and Valtteri Bottas.
There was no time in the morning for Felipe Nasr, who did just three laps as Sauber reported "general issues with the C34."
01 Carlos Sainz Jr Toro Rosso 1:25.604 59 laps
02 Sebastian Vettel Ferrari 1:26.312 0.708 59 laps
03 Nico Hulkenberg Force India 1:26.591 0.987 33 laps
04 Nico Rosberg Mercedes 1:26.782 1.178 68 laps
05 Fernando Alonso McLaren 1:27.956 2.352 20 laps
06 Romain Grosjean Lotus 1:28.029 2.425 40 laps
07 Daniil Kvyat Red Bull 1:28.149 2.545 38 laps
08 Valtteri Bottas Williams 1:28.171 2.567 52 laps
09 Felipe Nasr Sauber No time 3 laps