Sainz reckoned he had enjoyed one of his better Fridays, at least in terms of his outright speed.
"In terms of pure pace, it does," he said. "In terms of feeling, not so much.
"There’s still a bit of work to do on the car for tomorrow, especially FP3 where we need to test a couple of things that we couldn’t test in FP2 because of the Pirelli test – so a few things are on the checklist."
Read also: Shwartzman satisfied with FP1 performance despite challenges
Leclerc was eager to get to work in FP2 having watched the first session from the Ferrari pitwall as the Scuderia's young gun Robert Shwartzman put in his laps.
The Monegasque racked up 37 laps overall in the extended session, adding development work for Pirelli's 2023 tyres to his own program.
"It was really busy! I think it’s the busiest FP2 I’ve ever done," he said after topping FP2. "But it was nice, it was fun - loads of laps, loads of tyres - obviously the prototype tyres, too, that we’ve tested.