Stroll was tagged by the Ferrari driver early on the opening lap at the Sochi Autodrom, sending him spinning into a wall and a second consecutive retirement after crashing out at Mugello due to a puncture sustained in the Tuscan Grand Prix.
An unhappy Stroll said: "I got clipped by Leclerc. Very sloppy from his part. I gave him all the room. I was on the outside of the corner and he just clipped my right-rear tyre.
"I gave him all the room I could. It was unlucky but he could’ve avoided it. He didn’t have to run so wide into me."
Asked whether he was surprised Stroll failed to receive a penalty from the stewards for the incident, he added: "I'm quite surprised. It was avoidable from his end. It’s kind of ridiculous he didn’t get a penalty."
Responding to the criticism, Leclerc offered no apology. He said: "I tried to go up the inside of Lance in turn four.
"And then in the middle of the corner [Sergio] Perez took the apex, and when I was behind him I understeered quite a bit, and then we made contact with Lance."
After watching team-mate Perez claim fourth, Stroll was naturally annoyed as he felt he could have achieved a strong result.
"I think a lot was possible," added Stroll. "I think we were seventh at that point. I had a great start, we were on a good tyre. So it was a real shame."
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