The 'who drives when' Barcelona schedule... so far.

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Six teams - Mercedes, Williams, Ferrari, Red Bull, McLaren and Renault - have confirmed their driver duty schedules for the first week of pre-season testing which kicks off Monday in Barcelona.

The schedule is provisional as unforeseen changes are always possible.

Mercedes appears to be the only team, for now, to have allocated half-day schedules to Lewis Hamilton and Valtteri Bottas.

Perhaps as a way to gradually accustom their drivers to the increased physical demands which the 2017 cars are expected to impose on drivers this year.

Mercedes' new recruit Valtteri Bottas will be at the wheel of the first Silver Arrows to head out on to the Circuit de Catalunya on Monday morning.

Felipe Massa, Daniel Ricciardo, Sebastian Vettel, Fernando Alonso and Nico Hulkenberg will kick off pre-season testing for their respective teams.

Toro Rosso, Haas, Force India and Sauber have yet to announce their driver schedules.

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Phillip van Osten

Motor racing was a backdrop from the outset in Phillip van Osten's life. Born in Southern California, Phillip grew up with the sights and sounds of fast cars thanks to his father, Dick van Osten, an editor and writer for Auto Speed and Sport and Motor Trend. Phillip's passion for racing grew even more when his family moved to Europe and he became acquainted with the extraordinary world of Grand Prix racing. He was an early contributor to the monthly French F1i Magazine, often providing a historic or business perspective on Formula 1's affairs. In 2012, he co-authored along with fellow journalist Pierre Van Vliet the English-language adaptation of a limited edition book devoted to the great Belgian driver Jacky Ickx. He also authored "The American Legacy in Formula 1", a book which recounts the trials and tribulations of American drivers in Grand Prix racing. Phillip is also a commentator for Belgian broadcaster Be.TV for the US Indycar series.