F1i brings you live coverage of the first of two days of in-season testing from the Circuit de Catalunya in Barcelona.
Mercedes has Spanish Grand Prix winner Nico Rosberg driving on Tuesday as the team looks to build on the impressive progress it made this weekend, comfortably beating Ferrari on Sunday. With Ferrari keen to understand if it got the most out of its new updates, Raffaele Marciello drives the SF15-T on the opening day.
The other race drivers involved on day one are Daniil Kvyat at Red Bull, Felipe Massa at Williams, Pastor Maldonado in the Lotus and Marcus Ericsson at Sauber.
Pierre Gasly makes his test debut for Toro Rosso, while Force India has been forced in to a driver change, with Nick Yelloly now driving on Tuesday instead of Pascal Wehrlein. The young Mercedes driver unwell. Wherlein is expected to be fit enough to drive for Mercedes on Wednesday, but Force India will need to revise its plans for day two.
Nine of the ten teams have remained at the circuit following Sunday's Spanish Grand Prix, with only Manor not testing this week.
For live coverage of the opening day of testing, click here
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