Cape Town - South Africa's Kevin Anderson and eight-time Wimbledon champion Roger Federer are embroiled in a classic quarter-final which has entered the fifth set - and passed the four hour mark.
Federer took the opening two sets 6-2 and 7-6 (7/5) before Anderson rebounded to take sets 3 and 4, 7-5 and 6-4 to even the contest.
LIVE: Anderson v Federer set 5
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