Nico Rosberg topped a shortened final practice for the Russian Grand Prix, in a session which was cut short following a big accident involving Carlos Sainz.
The session came to a halt with 20 minutes to go after Sainz appeared to lose control of his car on the approach to Turn 13.
The car impacted against the barriers and it was buried below them.
Practice was first red-flagged and then race control announced it would not be restarted.
The Spaniard was taken to the medical centre but he was conscious and speaking.
Rosberg set the pace with a time of 1:38.561 on the super-soft tyres, finishing over seven tenths clear ahead of the Williams of Valtteri Bottas and teammate Lewis Hamilton.
The early finish meant several drivers did not complete a qualifying simulation.
Following yesterday's fruitless session, it was a busy start to the day, with most drivers jumping on the track right away as the lights turned green.
The only driver who did not set a time right away were Ferrari duo Sebastian Vettel and Kimi Raikkonen, who stayed in their garage longer than their rivals.
Bottas was the early pace-setter by some margin, the Williams driver nearly three seconds clear of the rest of the field at the 10-minute mark despite using the soft tyres.
The super-softs made an early appearance with the Red Bull cars, but neither Ricciardo nor Kvyat set competitive times with them as the team appeared to focus on longer runs.
Massa made it a Williams 1-2 at the top of the times 15 minutes into the session, just three tenths behind his teammate, as Max Verstappen spun his Toro Rosso at the final corner.
At the time, the Williams duo were two seconds ahead of their closest rival.
Bottas went even quicker before the halfway point, setting a best time of 1:40.275 to open the gap to Massa to nearly seven tenths.
The Finn's dominance came to an end moments later, however, with Rosberg setting a new benchmark of 1:38.941 with a run on super-softs. The Mercedes driver went quicker on his next lap, lowering his best to a 1:38.561 before Sainz's accident.
|4||Sergio Perez||Force India||1:39.616||+1.055||14|
|6||Nico Hulkenberg||Force India||1:39.917||+1.356||14|
|8||Pastor Maldonado||Team Lotus||1:40.767||+2.206||13|
|11||Daniil Kvyat||Red Bull Racing||1:41.358||+2.797||15|
|13||Romain Grosjean||Team Lotus||1:42.371||+3.810||14|
|15||Carlos Sainz Jr.||Toro Rosso||1:42.683||+4.122||19|
|17||Max Verstappen||Toro Rosso||1:43.089||+4.528||16|
|18||Daniel Ricciardo||Red Bull Racing||1:43.347||+4.786||14|