Alexander Zverev has ended Novak Djokovic’s run at the O2 to win the biggest title of his career. The 21-year-old was the fresher and stronger out of the two contesting the final at the O2 Arena in London. Following their match, Djokovic openly backed the German to one day break his record in terms of titles won. Something Zverev was quick to downplay.

There will not be a dream Djokovic-Federer showdown at the ATP Finals on Sunday after two very contrasting semi-finals.

Roger Federer was sent crashing out of the tournament following a sensational performance by Alexander Zverev. Zverev’s triumph had a bitter taste after his match concluded in controversy when he stopped during a rally after noticing a ball boy dropping a ball. Prompting backlash from the crowd and a big debate in the London capital.

In the other semifinal, Novak Djokovic produced a near-perfect performance against a sluggish Kevin Anderson, who leaked 33 unforced errors. Djokovic heads in the final without dropping his serve in the entire tournament.

Novak Djokovic has reiterated his credentials as a key contender for the ATP Finals title with the help of another clinical performance. The world No.1 dropped only five points behind his serve during his straight sets triumph over Marin Cilic. Meanwhile, rising star Alexander Zverev was another player to produce a powerful service display as he brushed aside John Isner. Zverev will take on Roger Federer on Saturday afternoon, followed by Djokovic against Kevin Anderson in the evening.