Did you know?published at 17:23 Greenwich Mean Time 23 February 2015
Mikhail Youzhny might well look to the sky.
Only two head-to-head winning streaks are longer than Federer's over Youzhny.
Ivan Lendl's 17-match run against Tim Mayotte and Rafa Nadal's recently broken one against Tomas Berdych - 18.