Big Jeff
Striker
Ferrari and McLaren deliberately held back until Tuesday with the Italian team hitting the track as soon as the pitlane opened at 9am.
Red Bull joined Ferrari soon after with Max Verstappen getting his first taste of the RB22, but he caused a red flag on his outlap.
It is understood he briefly went off into the gravel at Turn 5 and was able to continue, but it prompted a pause in the session of just over five minutes.
Ferrari resumed its running as soon as the test restarted and Verstappen was soon back out too.
But around an hour and a half into the session, what had started as light rain set in fully, with the sky around the track looking ominously murky.
Red Bull joined Ferrari soon after with Max Verstappen getting his first taste of the RB22, but he caused a red flag on his outlap.
It is understood he briefly went off into the gravel at Turn 5 and was able to continue, but it prompted a pause in the session of just over five minutes.
Ferrari resumed its running as soon as the test restarted and Verstappen was soon back out too.
But around an hour and a half into the session, what had started as light rain set in fully, with the sky around the track looking ominously murky.