Zverev so proud after 'astonishing' ATP Finals win

London: Germany's Alexander Zverev described his ATP Finals title as "astonishing" on Sunday after beating Roger Federer and Novak Djokovic in consecutive days without losing a set.

Just as against Swiss 20-time Grand Slam champion Federer in Saturday's semi-final, the 21-year-old produced a dashing display of power and guile to stun the in-form Djokovic 6-4, 6-3.

Not only did he become the youngest winner of the title since Djokovic 10 years ago, and the first German to triumph since Boris Becker in 1995, Zverev also became only the fourth player to beat Federer and Djokovic back-to-back in the semi-final and final of the same tournament.

Rafael Nadal has managed it three times, Andy Murray once and David Nalbandian is the other. "Obviously it's quite astonishing, winning this title, beating two such players back-to-back, Roger and Novak, in semi-finals and finals. (It) Means so much," Zverev told reporters. "I'm incredibly happy and incredibly proud right now." Djokovic had schooled Zverev 6-4, 6-1 on Wednesday in the round-robin stage, but following his victory over Federer, after which he was booed by fans over a controversial point in the second-set tiebreak, the German was a different proposition.

Zverev said the loss to Djokovic had prompted a different approach, following a discussion with coach Ivan Lendl — the eight-times Grand Slam champion who helped Britain's Murray to multiple major titles.

"He obviously analysed the match that I played with him a few days ago, told me a few things I had to do different. I was more aggressive today," Zverev, who will end the year ranked fourth in the ATP

rankings, said. After this statement victory, Zverev's next task will be to go past the quarter-final of a Grand Slam for the first time.