Two-times former champion Novak Djokovic overcame a lapse in concentration to beat unseeded American Tennys Sandgren 6-1 6-3 6-7 6-2 and reach the third round of the US Open on Thursday.
Two-times former champion Novak Djokovic overcame a lapse in concentration to beat unseeded American Tennys Sandgren 6-1 6-3 6-7 6-2 and reach the third round of the US Open on Thursday.