Alexander Zverev looks ahead to his blockbuster with Andy Murray as he seals ATP Finals spot
Alexander Zverev overcame American Jenson Brooksby in three sets.
Novak Djokovic comes back from a set behind to see off Jenson Brooksby
World No 1 found himself a set down after less than half-an-hour.
‘I was on the back foot’ – Novak Djokovic made to work for US Open quarterfinal spot
World number one survives scare.