Federer fighting to avoid defeat by Tsitsipas – radio & text
http://www.bbc.co.uk/sport/live/tennis/46569998

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