Just an hour to go in the session and Marc Marquez has gone to the top of the order with a 1m35.876s.
Marc Marquez's 1m35.876s keeps him fastest of all at the end of the test day.
Been a relatively slow afternoon so far but Bagnaia's now jumped up to 13th, and Zarco has moved up to 12th.
Only Mir and Di Giannantonio out on track at the moment.
Personal best comes in from Alex Marquez, he stays sixth but improves to a 1:36.833.
Not been a lot of action from Bagnaia this afternoon but he's back out on track now. Only lapping in the 1:39s and 1:40s, though.
PB lap from Miller moves him up to 12th on a 1:37.822.
Alex Rins has jumped up to second on a 1:36.507 to give us a Yamaha 1-2 at the moment.
Di Giannantonio has gone down but rider is reported as ok. He's currently seventh in this session.
Dani Pedrosa has now become the ninth rider to set a time this session down in ninth.
Not been a busy start to the second session so far. After about an hour of running, only eight riders have put times on the board.
Quartararo still fastest from Bezzecchi, Aldeguer, A.Marquez, Vinales, Rins, Nakagami and Chantra.
Yamaha's Paolo Pavesio confirmed the marque is testing an updated engine today at Jerez, plus offered an update on the V4 situation.
Read his thoughts here
Quartararo has improved to a 1m36.489s.
Fabio Quartararo has just gone top on his Yamaha with a 1m36.740s.
Yamaha confirms it has brought an update to its current engine for this test and has so far been received positively from its riders.
No V4 here.
Somkiat Chantra is also now on track for the first time. The LCR rider sat out the first session due to the arm pump that forced him to retire from the grand prix yesterday.
Session 2 is underway with Maverick Vinales first out and has the track to himself.
There will be a practice start session now, before the official second session gets underway at 1:20pm local time.
The first session of the test day is over. The order is:
- M.Marquez - 1m36.184s
- Quartararo
- Zarco
- Bezzecchi
- Di Giannantonio
- Vinales
- A.Marquez
- Rins
- Binder
- Aldeguer
Marc Marquez remains top of the order. Ducati appears to be testing a new chassis - most likely an updated version of the 2025 frame it discarded after the pre-season.
All gone pretty quite at Jerez with 20 minutes left in the first session. Only a handful of riders out just now, and no major update revelations to share with you.
Just an hour to go in the first session of the test. The top 10 order looks like this:
- M.Marquez - 1m36.184s
- Quartararo - +0.222s
- Zarco - +0.416s
- Bezzecchi - +0.541s
- Di Giannnantonio - +0.604s
- A.Marquez - +0.794s
- Rins - +0.861s
- Binder - +0.871s
- Aldeguer - +0.897s
- Ogura - +0.990s
Aprilia has offered an insight into what it is testing today.
"During this test, the goal will be to explore solutions that are difficult to develop during race weekends due to the tight schedule. Several interesting components will be tested, particularly in the area of aerodynamics, in preparation for a possible second homologation as allowed by the regulations.
• For Marco Bezzecchi, the focus will be on aerodynamics and testing a different swingarm.
• On Lorenzo Savadori's side, some new developments aimed at improving braking performance and the bike’s stability.
Zarco improves to a 1:36.767 to go third-fastest.