Hello and welcome to ESPN's coverage of first practice of the United States Grand Prix from the Circuit of the Americas.
The main talking point this weekend is the absence of Caterham and Marussia, both of whom went into administration within a week this month. A stark reminder of the financial challenges facing F1 in the modern era.
The plight of Caterham and Marussia was met by something of an "I told you so" statement from the FIA, with Jean Todt set to decide on whether either team will take a penalty for no-showing this event.
That Grosjean helmet is.... interesting...
@MikeInDenmark: Nope, but there's a fair bit of moisture still on the track from overnight rain.
@F1Genius: Never heard it put like that before but yes, I guess that's one way to look at it.
@SunilPanem: Teams may be contractually obliged to run third cars to bring the numbers of the grid above 20.
Here's a look at the 2015 nose Grosjean will be testing for Lotus in this session....
It certainly looks nicer than their 2014 model...
The session is green and a number of cars scurry out on to the track for an early run. Expect to see medium tyres all the way this morning.
@HueMercsFanfromMalta: This one looks likely to be a fight between the Mercedes drivers out in front.
Raikkonen has an interesting-looking aero sensor on the front of his Ferrari. It looks a bit like a fridge door for the Iceman....
Getting my first glimpse of the 18-car timing screens. A disappointing sight.
@F1Genius: Haha! I don't think anyone will get close to them once again. Williams should be best of the rest but McLaren has really taken a step forward recently.
@F1Genius: Ferrari has been on the back foot since the winter, it's power unit and the F14 T itself are both lacking compared to its rivals. With the engines homologated in February, there's not much improvement that can be made in the season - hence why Marco Mattiacci is so keen to get the engine freeze lifted.
So the only names on the timesheets at the moment are the championship contenders - Hamilton in P1 with a 1:49.164, over a second quicker than Rosberg at this early stage, but very little can be read into times this early in the session.
@HueMercsFanfromMalta: Ferrari is likely to turn its attention to 2015 parts from this weekend onwards.
@NovaF1Racer: He certainly is an option for 2015. Verstappen even said yesterday he would prefer to have JEV as a team-mate, so there is hope for the Frenchman yet.
@Andre: Nothing yet. Alonso continues to be as cryptic as possible about his future, while Vettel is widely believed to have signed for Ferrari - but nothing is confirmed. The next few weeks should reveal all.
Sutil is the only other man out on track but he's nearly three seconds off Hamilton with his first timed run.
Worth reminding you that Verstappen and Nasr are in during this session, for JEV and Massa.
@MathewGeorge: I still think he'll be at McLaren. Hard to tell at the moment whether he is being purposefully vague or whether he actually has left himself out in the cold, though. Really fascinating few weeks ahead I think, whatever happens.