Novak Djokovic may have missed out on his 100th career title at the Miami Open, but former world No 1 Andy Roddick believes the Serbian star has shown he can still win a record-breaking 25th Grand Slam title.

His loss to 19-year-old Czech talent Jakub Mensik underlines the changing face of men’s tennis - and puts a 100th ATP title further out of reach

Jakub Mensik used his length to shrink the court, erasing Novak Djokovic's ability to find winners in a shock upset for his first career tennis title Sunday at the Miami Open. The No. 54 player in the world also denied Djokovic of his 100th career title and a record seventh Miami Open crown.