Toro Rosso driver Carlos Sainz Jr. was left to rue a brake failure which robbed him of a good haul of points at the Russian Grand Prix.
Sainz spent the bulk of Saturday in hospital following a high-speed crash in practice but the Spaniard returned to the cockpit of his STR10 for the race, starting from the back of the grid.
Sainz picked his way through the midfield and held seventh position until a deteriorating brake issue pitched him into a spin at Turn 10, before he slid into the barriers at Turn 13.
"It's a bit of a disappointment to retire the race after being seventh, we could have been sixth even," he said.
"[I had a] great rhythm, great pace, starting last after all the dramatic things that happened, I really tried to make it to the end, from lap 20 I knew I had a problem with the brakes and the car wasn’t decelerating well and with eight laps to go they went off and I crashed.
"From lap 20 I knew it could happen and I stuck with it knowing I could have a moment, it was risky but I really wanted to get to the end."