Another change at the top and it's not a Ducati as Brad Binder dips below the 1m 53s barrier.
Bastianini goes back to the top of FP1 after setting a 1m53s flat. Marquez is now +0.124s down on 'The Beast'.
After playing down expectations, Marc Marquez will quickly have to reset his goals as he goes fastest for the second time today.
Martin goes back to the top as Marquez improves but stays fifth.
Not the start to FP1 that Yamaha would have hoped for as Fabio Quartararo and Alex Rins are only 18th and 19th.
KTM are showing some good pace as Jack Miller goes second behind Enea Bastianini. Acosta has gone fourth - less than two tenths off Bastianini's 1:53.211s.
Francesco Bagnaia has not made the start we expected after entering pit lane with rear tyre concerns.
Marc Marquez replaces his brother Alex at the top of the leaderboard. It's a time of 1:53.408s for the eight-time world champion.
It's now Brad Binder's turn to venture off circuit.
Wide moment for Miguel Oliveira on his opening push lap.
FP1 is underway in Qatar as bike begins to head out on circuit.
Here's all the information for how to watch.
Marc Marquez will make his official Ducati debut during FP1, while Pedro Acosta will look to continue his impressive from from pre-season testing.
Good afternoon and welcome to day-one of the 2024 MotoGP season. Coming up at 12:45 UK time is FP1 in Qatar.