Claire Williams has confirmed Williams has no plans to provide Lance Stroll with a Formula One practice outing before the end of the 2016 season.
The Grove-based outfit is currently embroiled in a tight battle over fourth place in the constructors' championship with Force India. Williams ruled out the possibility of Stroll making his F1 practice debut this year, stating the importance of allowing current drivers Valtteri Bottas and Felipe Massa as much running time as possible, as the team looks to overhaul a nine-point deficit to Force India.
"There are no plans [to run Stroll]," Williams said. "We're in a very critical time with the team trying to challenge Force India for that fourth place. Felipe is also retiring, so it wouldn't be fair on either driver to do that."
The decision means Stroll faces the prospect of heading into his debut F1 campaign in 2017 -- and the start of a new regulation era -- with only a handful of days' experience behind the wheel of a 2014 Williams FW36. Williams says she is not concerned by the likelihood of Stroll making mistakes in his rookie year.
"The one thing I have learnt about Lance over the 12 months we've been working closely with him is his work ethic is second to none for a 18-year-old to achieve what he has in such a short space of time, I have a huge amount of confidence that when he gets into the cockpit in Melbourne he can deliver.
"But he will need some time like any rookie does in this sport to bed in. There may be some mistakes but that is going to be an inevitability, but we already know from Lance that he learns from his mistakes quickly."
Stroll will make the jump straight from European Formula 3 to F1, following a similar career path to that of Bottas, who himself bypassed GP2 to prioritise test and reserve driver roles with Williams. The 18-year-old says he has no doubts over his ability to make a successful transition to F1, after winning this year's F3 title.
"I won the last round of 2015 and came into 2016 with a lot of confidence," the Canadian explained. "I knew the speed was there and knew that we were capable of winning races and even fighting for the championship. It was just about putting all the details together. We knew we could win but dominating the championship the way we did was definitely a year to remember.
"The reason for not doing GP2 is that F3 is a very high level, and if the opportunity for Formula One arises nothing prepares you for Formula One like actually competing in Formula One. GP2 is a step up and it's that middle step, one that is sometimes good to make, but I don't think anything actually compares to actually competing in Formula One."