Benneteau leads the Swiss player 6-4, 7-6 (7-3), 2-6 under a closed roof on Centre Court. A loss today for Federer would be his earliest in a major since the 2004 French Open, when he was defeated by Gustavo Keurten in the third round.
Federer, 30, has come back from two sets down seven times in his career.
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