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By Martyn Herman LONDON (Reuters) - Roger Federer was handed the Sunday night prime time slot for the opening match of his 16th ATP Finals but fluffed his lines in an error-strewn 7-6(4) 6-3 defeat...

TENNIS/ Nishikori beats error-prone Federer in ATP Finals opener:The Asahi Shimbun TENNIS/ Nishikori beats error-prone Federer in ATP Finals opener:The Asahi Shimbun

LONDON--Roger Federer was handed the Sunday night prime time slot for the opening match of his 16th

Roger Federer pays for an error-strewn performance as his opening group match at the ATP Finals ends in defeat by Kei Nishikori.

Roger Federer’s bid for 100th singles title stalls at ATP Finals Roger Federer’s bid for 100th singles title stalls at ATP Finals

The 37-year-old Swiss star was beaten in straight sets by the Japanese world number nine.

Roger Federer lost his opening match at the ATP Finals for the first time since 2013 as he went down 7-6 (4), 6-3 to Kei Nishikori on Sunday.

Federer's ATP Finals tilt takes a big hit

Kei Nishikori and Kevin Anderson have made winning starts at the ATP Finals with group wins over Roger Federer and Dominic Thiem respectively.

Angry Roger Federer suffers shock defeat to Kei Nishikori in ATP Finals opener

Roger Federer's hopes of winning a seventh ATP Finals title were dealt a major blow after he suffered a shock defeat to Kei Nishikori. The 20-time Grand Slam champion was...

Anderson outmuscles Thiem to win ATP Finals opener

Kevin Anderson made an impressive debut at the ATP Finals on Sunday, beating Dominic Thiem 6-3, 7-6 (12/10) as Roger Federer prepared to launch his bid for the 100th title of his storied career.

Kevin Anderson marks ATP Finals debut with victory over Dominic Thiem Kevin Anderson marks ATP Finals debut with victory over Dominic Thiem

The South African won 6-3 7-6 (12/10) in an hour and 47 minutes.