George Russell says this year's world championship is Kimi Antonelli's "to lose" after the Briton's retirement from the last race in Canada.
Russell heads into this weekend's Monaco Grand Prix with a 43-point deficit to his Mercedes team-mate after the Briton's engine failed while leading in Montreal.
Italian Antonelli, 19, has won four races in a row, while Russell's only grand prix victory this year was in the season-opening race in Australia.
Monaco is the sixth round of what is now a 22-race season.
"If I look at it from my competitor's position, you're kind of in a position now that you've got such a buffer, it feels like you can only keep it or you can only lose it," Russell said.
Russell heads into this weekend's Monaco Grand Prix with a 43-point deficit to his Mercedes team-mate after the Briton's engine failed while leading in Montreal.
Italian Antonelli, 19, has won four races in a row, while Russell's only grand prix victory this year was in the season-opening race in Australia.
Monaco is the sixth round of what is now a 22-race season.
"If I look at it from my competitor's position, you're kind of in a position now that you've got such a buffer, it feels like you can only keep it or you can only lose it," Russell said.
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