Paddy Lowe, Chief Technical Officer: A very frustrating day unfortunately, most particularly for the fans. We have fantastic spectators in Austin who've come a long way to watch the running and unfortunately with the weather, and limited range of tyres, we didn't do much running. We ran in both sessions on both types of wet tyre and did some experiments which gave us some limited information, which we hope will be useful should it be wet tomorrow for qualifying. We really hope we can have a proper session tomorrow and that we don't end up with a postponement as we had in 2015.

Sergey Sirotkin: It wasn't the busiest day out there, but I think we learned enough for tomorrow. Unfortunately, I think we were all tyre limited so we couldn't really run and try too many things that we would have wanted to. I think we learned some interesting things in the morning, then in the afternoon we spotted some differences between the tyre compounds in FP2. We wanted to see the crossover between the two tyre sets as well as prepare ourselves for the many different situations that tomorrow's qualifying session might present. From what we could do today in terms of running, we did reasonably.

Lance Stroll: Today we just did bits and pieces, getting an eye for everything and feeling the grip in various parts of the circuit. We did the usual wet running, minimal laps were completed, but it was the same case for everyone. We thought it would be beneficial to go out to learn a thing or two. It is always challenging in the wet, but I think it was playing into our hands assuming that we would struggle in the dry this weekend, although I am always optimistic so did not assume this. Unfortunately, we had just three sets of tyres which is not ideal and a shame for the fans with very little running on a day like this. We could definitely have run more if we would have had more tyres, as although it was raining quite heavily at times, it was ok to run.

Check out our Friday gallery from COTA, here.