Federer fighting to avoid defeat by Tsitsipas – radio & text

Summary

1. Stefanos Tsitsipas leads champion Roger Federer two sets to one
2. 20-year-old Greek fights back to lead 6-7 (11-13) 7-6 (7-3) 7-5
3. Second seed Angelique Kerber stunned 6-0 6-2 by Danielle Collins
4. World number two Rafael Nadal beats Tomas Berdych 6-0 6-1 7-6
5. Sloane Stephens plays later on day seven
6. Watch highlights on BBC Two at 17:15