Williams chief technical officer Paddy Lowe did not entertain any questions about how reserve driver Robert Kubica fared against Lance Stroll and Sergey Sirotkin in pre-season testing.

The Pole was reportedly quicker at the Circuit de Catalunya than both Stroll and Sirotkin, prompting more questions to be asked as to why he was not given the 2018 drive ahead of Sirotkin, who made the move from a reserve role at Renault during the off-season.

But Lowe was particularly defensive when asked about Kubica’s performance and how it matched up to the main driver line-up.

“I don’t want to answer that question.