Gritty Federer Lives To Fight Another Day

Zverev finally solves the Nadal puzzle

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Roger Federer got back on track at the ATP Finals with a 7-6(2), 6-3 defeat of Italian Matteo Berrettini on Tuesday.

Defeat by Dominic Thiem in his opening round-robin match on Sunday had left the six-time champion facing an early exit.

Berrettini was also coming offa heavy defeat by Novak Djokovic in his first appearance at the event, and the 23-year-old showed why he has made such an impact this year as he pushed Federer hard in the opening set.