Alexander Zverev stuns Novak Djokovic to win ATP Finals in London

New kid on the block…Alexander Zverev

Alexander Zverev stunned world number one Novak Djokovic in straight sets to win the season-ending ATP Finals and earn the biggest victory of his career.

Djokovic, 31, was the heavy favourite to win a sixth finals title but was outclassed 6-4 6-3 by the German.

Zverev, the third seed, broke Djokovic for a 5-4 lead in the first set, then served three big aces to take the set.

The 21-year-old continued to dominate in the second and sealed a memorable victory as Djokovic faltered.

“I’m unbelievably happy. Obviously it is the biggest title I have ever won,” said Zverev, who took home about £2m in prize money.

“How I played today, how I won it, for me it’s just amazing.”

He had lost to Djokovic in straight sets in the round-robin stage but, after beating Roger Federer in Saturday’s semi-finals, produced a more confident performance to stop the Serb equalling Federer’s haul of end-of-season titles.

Zverev missed his first championship point before hitting a sensational backhand down the line for victory, falling to the court in a mixture of disbelief and celebration as Djokovic jumped over the net to congratulate him.

“You definitely played much better than you did the group stage,” Djokovic told him with a laugh. “You deserved to win.”