BBC Sport - Wimbledon 2017: 'That wasn't easy' Roger Federer seals first set

'That wasn't easy' - Federer seals first set

Watch Roger Federer take the first-set tie-break in his semi-final against Thomas Berdych.

WATCH MORE: GB's defending champion Reid loses to Olsson

Follow live in-play clips, text and video from up to eight courts

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