Charles Leclerc topping the lap charts in Day 4 morning session | F1 testing. Charles topping the lap charts in Day 4 morning session.

Scuderia Ferrari Monegasque driver Charles Leclerc put in the work in his SF90 car, compiling a decent number of laps around the track for the morning and setting some fast times, despite making a trip through the gravel late on. Charles completed 75 laps, with a personal best of 1:18.046, which was done using the C3 tyre.

Alexander Albon late flying lap ensured Toro Rosso returned to the summit of the testing timesheets in the morning session of day four. The Anglo-Thai driver was handed a set of the fastest available tyres and set the fastest time of pre-season testing so far – a 1:18.637 – to beat Daniel Ricciardo (who also used the C5 tyre for his fastest time) by just over one tenth of a second.

Lewis Hamilton competed against Ferrari’s Charles Leclerc for much of the morning as they traded fastest laps on the C2 and C3 tyres, before a final run on the C4 tyres yielded the third-best time for Mercedes.

Hamilton’s 1:17.977 was just one tenth faster than Leclerc’s time, with the pair a good half-second ahead of Alfa Romeo’s Antonio Giovinazzi, who had a couple of minor, harmless off-track moments. Romain Grosjean and Haas had a much more reliable morning and were sixth fastest, setting a time just half-a-tenth behind the Alfa Romeo. Red Bull’s Pierre Gasly was seventh fastest after not concentrating on low fuel runs.

Testing will resume for another four hours at 14:00 local time.

Pos	Driver	Team	Time	Gap	Laps
1	Alexander Albon	Toro Rosso	1:17.637		44
2	Daniel Ricciardo	Renault	1:17.785	0.148	34
3	Lewis Hamilton	Mercedes	1:17.977	0.340	58
4	Charles Leclerc	Ferrari	1:18.046	0.409	75
5	Antonio Giovinazzi	Alfa Romeo	1:18.511	0.874	56
6	Romain Grosjean	Haas	1:18.563	0.926	64
7	Pierre Gasly	Red Bull	1:19.495	1.858	52
8	Lando Norris	McLaren	1:19.543	1.906	48
9	Lance Stroll	Racing Point	1:20.026	2.389	41
10	Robert Kubica	Williams	1:21.542	3.905	48