After the match, Novak Djokovic admitted it wasn't easy for him to overcome Steve Johnson: 'At night the conditions are quite different from the day, and the ball is a bit slower. So the bounce of the ball, as well, is a bit lower which is nicer for play, so to say. But in these kind of conditions, you obviously need to rely a lot on your serve and trying to hold your serve comfortably and hopefully get lucky on the return.'