Barcelona - Alfa Romeo driver Kimi Raikkonen produced the fastest lap so far in Formula One's pre-season testing to push his previous team, Ferrari, off the top of the lunchtime leaderboard on Wednesday.
It was the first time since testing started on Monday at the Circuit de Catalunya that Ferrari had not led at the end of a session.
The Finn, returning to the Swiss-based team previously known as Sauber, lapped with a best time of one minute 17.762 seconds on the softest, and fastest, C5 tyre compound.
Ferrari's Sebastian Vettel, his team mate last season, was second fastest in 1:18.350.
Raikkonen's lap was also the first time a team had gone faster in 2019 than they managed in last year's pre-season testing.