It was a day of frustration for drivers and teams at Suzuka on Friday with Lewis Hamilton admitting they didn't learn much in the wet conditions.
Hamilton and the Mercedes team are looking to bounce back from their Singapore disappointment, but the Japanese Grand Prix race weekend got off to a wet start with limited running in both FP1 and 2.
The reigning World Champion completed only six laps in the morning session and another eight in the afternoon, which put him P3 and 0.576s off pace-setter Daniil Kvyat's time of 1:48.277.
Asked by BBC F1 what he learned on Friday, the reply was: "Have you heard of the term diddly squat? That is exactly what.
"There was not much to learn, we learned it all in the last race here when it was raining. It is irrelevant what we did today, with the weekend going to be dry."
His Mercedes team-mate Nico Rosberg completed a total of 22 laps on Friday and motorsport boss Toto Wolff admits they didn't really want to risk things by going all out in poor conditions.
Mercedes F1 team boss Toto Wolff: "If you don't need to test any new items on the car, there is no need to take a risk in these conditions.
"This circuit should definitely suit our car more than in Singapore but nevertheless the enemy has come alive."