Who drives when at this week's in-season test in Bahrain?

After a day of respite, it's back to the grind on Tuesday for several drivers who will be running in this week's two-day in-season test in Bahrain.

The test is open to young drivers holding the required super licence or who have competed in two F1 races or less, which is the case of George Russell who be running with both Williams and Mercedes at Sakhir.

Needless to say, all eyes will be on Mick Schumacher on Tuesday as the F2 racer makes his big F1 debut with the Scuderia, a team intimately linked of course to his legendary father.

On Wednesday, Mick will move from Ferrari to sister team Alfa Romeo where he'll enjoy more F1 mileage, superseding fellow F2 racer Callum Ilott who will make his F1 debut with the Swiss outfit.

Among the other young hopefuls, double Macau Grand Prix winner Dan Ticktum will get his baptism of fire onboard Red Bull Racing's RB15 on Wednesday, while Jack Aitken will take over from Daniel Ricciardo at Renault on day 2.

Another interesting sight on Tuesday will be Fernando Alonso, the Spaniard making a one-off return to F1 with McLaren for the purpose of a Pirelli tyre test.

Here is the full line-up for the first in-season test of 2019.