Sebastian Vettel endured a frustrating day at the office as he struggled for consistency in FP2 after finishing third in FP1 at the Monaco Grand Prix.
The Ferrari driver, 28, was competitive in the opening session on Thursday as he led the chase to catch the two Mercedes cars, clocking a time four tenths slower than Lewis Hamilton at the top of the time charts.
Vettel could not match that in the day's second session, though, as he finished ninth having twice hit the barriers - damaging a rear wing and wheel rim in the process.
That incident packed FP2 left the four-time world champion disappointed and determined to improve ahead of this weekend's race in the principality.
"It was not a 'clean' day in the office," Vettel said. "Our session was a bit scrappy: I touched the wall and damaged the rear wing, but luckily we were able to fix it and carry on.
"I just didn't get everything out of the car, couldn't find the rhythm and didn't do good laps on the ultrasoft tyres. If you look at the standings, we don't belong there.
"But overall the car is good and has the pace. So I am not worried for Saturday when we will be a lot better.
"Our focus was not towards ranking high up, we tried a couple of things and it is fair to say that some of them didn't work. Being the first practice day, it is also difficult to say what other people did."
Kimi Raikkonen, meanwhile, finished seventh and ninth in the two sessions.