It's finally here: 2021 pre-season testing begins today at the Bahrain International Circuit, so here is the full run down of who's driving on day one of the three-day event.

    All 10 teams will be in action from Friday morning as we see the 2021 grid together on track for the first time, with the first session taking place from 1000-1400 local time and the afternoon session taking place at 1500-1900 local time.

    READ MORE: Watch all of 2021 Formula 1 pre-season testing LIVE on F1 TV

    The roster on day one includes reigning champion Lewis Hamilton, four-time champion Sebastian Vettel for Aston Martin, McLaren's new recruit Daniel Ricciardo and rookie Mick Schumacher for Alfa Romeo.

    See the full testing line-up for day one in Bahrain below, be sure to follow live coverage here, watch live on F1 TV, and stay tuned to F1.com for the latest news, reports and reaction. READ MORE: Everything you need to know about 2021 pre-season testing

    Who's driving on day 1 of 2021 pre-season testing?

    Mercedes Valtteri Bottas (AM) Lewis Hamilton (PM)
    Red Bull Max Verstappen
    McLaren Daniel Ricciardo (AM) Lando Norris (PM)
    Aston Martin Sebastian Vettel (AM) Lance Stroll (PM)
    Alpine Esteban Ocon
    Ferrari Charles Leclerc (AM) Carlos Sainz (PM)
    AlphaTauri Pierre Gasly (AM) Yuki Tsunoda (PM)
    Alfa Romeo Kimi Raikkonen (AM) Antonio Giovinazzi (PM)
    Haas Mick Schumacher (AM) Nikita Mazepin (PM)
    Williams Roy Nissany