A setback for the 10 Formula 1 teams. Testing is already limited to three hourly days this season, so every minute on track is precious. But the first session on the second day was aborted prematurely. With an hour and a half left on the clock, a red flag was waved because of a loose drain. The test was not resumed in the morning. Charles Leclerc had recorded the fastest time in the previous 2.5 hours.